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                        MICROCHIP TECHNOLOGY INCORPORATED










                             1993 STOCK OPTION PLAN

                         AMENDED THROUGH APRIL 25, 1997



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                                TABLE OF CONTENTS


                                                                                                               Page

                                                      ARTICLE I
                                                       GENERAL
                                                                                                              
1.1      PURPOSE OF THE PLAN....................................................................................  1
         (a)      Amendment.....................................................................................  1
         (b)      Purpose.......................................................................................  1
         (c)      Effective Date................................................................................  1
         (d)      Successor to 1989 Plan......................................................................... 2
         (e)      Parent/Subsidiaries...........................................................................  2

1.2      STRUCTURE OF THE PLAN................................................................................... 3
         (a)      Stock Programs................................................................................. 3
         (b)      General Provisions............................................................................  3

1.3      ADMINISTRATION OF THE PLAN.............................................................................  3
         (a)      Bifurcation of Administration.................................................................  3
         (b)      Affiliate Administration....................................................................... 3
         (c)      Non-Affiliate Administration..................................................................  4
         (d)      Term on Committee.............................................................................  4
         (e)      Authority of Plan Administrators..............................................................  4
         (f)      Indemnification................................................................................ 5

1.4      ELIGIBLE PERSONS UNDER THE PLAN........................................................................  5
         (a)      Discretionary Option Grant..................................................................... 5
         (b)      Automatic Option Grant Program................................................................. 5

1.5      STOCK SUBJECT TO THE PLAN............................................................................... 6
         (a)      Amendment...................................................................................... 6
         (b)      Available Shares............................................................................... 6
         (c)      Adjustments for Issuances...................................................................... 6
         (d)      Adjustments for Organic Changes................................................................ 7
         (e)      Limitation on Grants to Employees.............................................................. 7

                                                     ARTICLE II
                                         DISCRETIONARY OPTION GRANT PROGRAM

2.1      TERMS AND CONDITIONS OF OPTIONS......................................................................... 8
         (a)      General........................................................................................ 8
         (b)      Option Price................................................................................... 8
         (c)      Payment of Option Price........................................................................ 8
         (d)      Fair Market Value.............................................................................. 9
         (e)      Term and Exercise of Options................................................................... 9
         (f)      Termination of Service.........................................................................10
         (g)      Discretion to Accelerate Vesting.............................................................. 11
         (h)      Discretion to Extend Exercise Period.......................................................... 11
         (i)      Definitions................................................................................... 11

                                       i


                                                                                                              
         (j)      Stockholder Rights............................................................................ 11
         (k)      Repurchase Rights............................................................................. 12

2.2      INCENTIVE OPTIONS...................................................................................... 12
         (a)      General....................................................................................... 12
         (b)      Dollar Limitation............................................................................. 13
         (c)      10% Stockholder............................................................................... 13
         (d)      Application................................................................................... 13

2.3      CORPORATE TRANSACTIONS................................................................................. 13
         (a)      Definition.................................................................................... 13
         (b)      Acceleration of Option........................................................................ 14
         (c)      Termination and Options....................................................................... 14
         (d)      Adjustments on Assumption or Continuation..................................................... 14
         (e)      Discretion to Accelerate...................................................................... 15
         (f)      Plan Not to Affect Corporation................................................................ 15

2.4      CHANGE IN CONTROL...................................................................................... 15
         (a)      Definition.................................................................................... 15
         (b)      Discretion to Accelerate...................................................................... 15
         (c)      Exercise Rights................................................................................16

2.5      INCENTIVE OPTIONS...................................................................................... 16

                                                     ARTICLE III
                                                      RESERVED


                                                     ARTICLE IV
                                           AUTOMATIC OPTION GRANT PROGRAM

4.1      TERMS AND CONDITIONS OF AUTOMATIC OPTION GRANTS.........................................................16
         (a)      Amount and Date of Grant...................................................................... 16
         (b)      Exercise Price................................................................................ 17
         (c)      Method of Exercise............................................................................ 17
         (d)      Payment Price..................................................................................17
         (e)      Exercise Date................................................................................. 18
         (f)      Term of Option................................................................................ 18
         (g)      Vesting........................................................................................19
         (h)      Limited Transferability....................................................................... 19

4.2      CORPORATE TRANSACTION.................................................................................. 19
4.3      CHANGE IN CONTROL...................................................................................... 19
4.4      MISCELLANEOUS PROVISIONS............................................................................... 20
         (a)      Corporation Rights............................................................................ 20
         (b)      Privilege of Stock Ownership.................................................................. 20

                                       ii

                                TABLE OF CONTENTS
                                    continued


                                                                                                               Page


                                                      ARTICLE V
                                                   MISCELLANEOUS
                                                                                                              
5.1      AMENDMENT OF THE PLAN AND AWARDS....................................................................... 20
         (a)      Board Authority............................................................................... 20
         (b)      Options Issued Prior to Stockholder Approval.................................................. 20
         (c)      Rule 16b-3 Plan............................................................................... 21

5.2      TAX WITHHOLDING........................................................................................ 21
         (a)      General....................................................................................... 21
         (b)      Shares to Pay for Withholding................................................................. 21
                  (i)      Stock Withholding.................................................................... 21
                  (ii)     Stock Delivery....................................................................... 21

5.3      EFFECTIVE DATE AND TERM OF PLAN........................................................................ 22
         (a)      Effective Date................................................................................ 22
         (b)      Incorporation of 1989 Plan.................................................................... 22
         (c)      Discretion.................................................................................... 22
         (d)      Termination of Plan........................................................................... 22

5.4      USE OF PROCEEDS........................................................................................ 22
5.5      REGULATORY APPROVALS................................................................................... 22
         (a)      General....................................................................................... 22
         (b)      Securities Registration....................................................................... 23

5.6      NO EMPLOYMENT/SERVICE RIGHTS........................................................................... 23
5.7      MISCELLANEOUS PROVISIONS............................................................................... 23
         (a)      Assignment.................................................................................... 23
         (b)      Choice of Law................................................................................. 23
         (c)      Plan Not Exclusive............................................................................ 24

                                       iii


                        MICROCHIP TECHNOLOGY INCORPORATED
                             1993 STOCK OPTION PLAN
                         AMENDED THROUGH APRIL 25, 1997


                                    ARTICLE I
                                     GENERAL
                                     -------

         1.1      PURPOSE OF THE PLAN

                  (a)  Amendment.  On January 19,  1993,  the Board of Directors
(the "Board") of Microchip Technology Incorporated,  a Delaware corporation (the
"Corporation")  adopted the 1993 Stock Option/Stock  Issuance Plan. On April 23,
1993 and September 14, 1993, the Board amended the Plan  authorizing  additional
available  shares of Common  Stock.  On October 7, 1993,  the Board  amended and
restated the Plan as stated  herein.  On April 18, 1994,  the Board  amended the
Plan  authorizing  additional  available  shares of  Common  Stock,  subject  to
stockholder  approval.  On January 20, and April 26, 1995, the Board amended the
Plan  authorizing,  among other matters,  additional  available shares of Common
Stock, subject to stockholder approval and the elimination of the stock issuance
portion  of the  Plan.  Any  options  outstanding  under  the Plan  before  this
amendment shall remain valid and unchanged. On April 25, 1997, the Board amended
the Plan authorizing, among other matters, additional available shares of Common
Stock, subject to stockholder approval.

                  (b)  Purpose.  This 1993 Stock Option  Plan,  amended  through
April 25, 1997 ("Plan") is intended to promote the interests of the  Corporation
by providing (i) key employees  (including  officers) of the Corporation (or its
parent or  subsidiary  corporations)  who are  responsible  for the  management,
growth and  financial  success of the  Corporation  (or its parent or subsidiary
corporations), (ii) non-employee members of the Corporation's Board of Directors
(the "Board") and (ii) consultants and other independent contractors who provide
valuable services to the Corporation (or its parent or subsidiary  corporations)
the opportunity to acquire a proprietary  interest,  or otherwise increase their
proprietary  interest,  in the corporation as an incentive for them to remain in
the service of the Corporation (or its parent or subsidiary corporations).

                  (c)  Effective  Date.  The Plan became  effective on the first
date on which the shares of the Corporation's  common stock are registered under
Section  12(g) of the  Securities  Exchange  Act of 1934,  as amended (the "1934
Act").  Such date is hereby  designated as the Effective  Date of the Plan.  The
effective date
                                       1

of any  amendments  to the  Plan  shall  be as of the  date of  Board  approval.
Notwithstanding  the foregoing,  certain  amendments  referenced  herein must be
approved by the stockholders of the Corporation.

                  (d)  Successor  to 1989  Plan.  This Plan  shall  serve as the
successor to the Corporation's  1989 Stock Option Plan (the "1989 Plan"), and no
further option grants or stock  issuances shall be made under the 1989 Plan from
and after the Effective  Date of this Plan.  All options  outstanding  under the
1989 Plan on such  Effective  Date are  hereby  incorporated  into this Plan and
shall  accordingly be treated as outstanding  options under this Plan.  However,
each outstanding  option so incorporated shall continue to be governed solely by
the express terms and conditions of the instrument evidencing such grant, and no
provision of this Plan shall be deemed to affect or otherwise  modify the rights
or obligations of the holders of such incorporated options with respect to their
acquisition  of  shares  of  the  Corporation's  common  stock  thereunder.  All
outstanding  unvested share  issuances  under the 1989 Plan shall continue to be
governed  solely  by  the  express  terms  and  conditions  of  the  instruments
evidencing  such  issuances,  and no  provision  of this Plan shall be deemed to
affect or  otherwise  modify the rights or  obligations  of the  holders of such
unvested shares.

                  (e)  Parent/Subsidiaries.   For  purposes  of  the  Plan,  the
following   provisions  shall  be  applicable  in  determining  the  parent  and
subsidiary corporations of the Corporation:

                           (i) Any corporation  (other than the  Corporation) in
an  unbroken  chain  of  corporations  ending  with  the  Corporation  shall  be
considered to be a parent of the corporation,  provided each such corporation in
the  unbroken  chain  (other  than  the  Corporation)  owns,  at the time of the
determination,  stock  possessing  fifty  percent  (50%)  or more  of the  total
combined  voting power of all classes of stock in any other  corporation in such
chain.

                           (ii) Each corporation (other than the Corporation) in
an  unbroken  chain of  corporations  beginning  with the  Corporation  shall be
considered to be a subsidiary of the Corporation, provided each such corporation
(other than the last corporation) in the unbroken chain owns, at the time of the
determination,  stock  possessing  fifty  percent  (50%)  or more  of the  total
combined  voting power of all classes of stock in any other  corporation in such
chain.

                  (f) All references  herein to number of shares of Common Stock
have been restated to reflect a 2-for-1 stock split of the Common Stock effected
on September  14, 1993,  a 3-for-2  stock split of the Common Stock  effected on
April 4, 1994, a 3-for-2 split of
                                       2

the Common Stock effected on November 8, 1994, and a 3-for-2 split of the Common
Stock effected on January 6, 1997.

         1.2      STRUCTURE OF THE PLAN

                  (a)  Stock  Programs.  The  Plan  shall  be  divided  into two
separate components: the Discretionary Option Grant Program specified in Article
II and the  Automatic  Option Grant  Program  specified in Article IV. Under the
Discretionary Option Grant Program,  eligible individuals may, at the discretion
of the Plan Administrator, be granted options to purchase shares of Common Stock
in accordance  with the  provisions  of Article II. Under the  Automatic  Option
Grant Program,  non-employee members of the Board will be automatically  granted
options to purchase shares of the Common Stock in accordance with the provisions
of Article IV.

                  (b) General  Provisions.  Unless the context clearly indicates
otherwise,  the provisions of Articles I and V shall apply to the  Discretionary
Option  Grant  Program  and  the  Automatic  Stock  Grant  Program,   and  shall
accordingly govern the interests of all individuals under the Plan.

         1.3      ADMINISTRATION OF THE PLAN

                  (a) Bifurcation of Administration.  The eligible persons under
the  Discretionary  Option  Grant  Program  shall be divided into two groups and
there  shall be a separate  administrator  for each  group.  One group  shall be
comprised of eligible persons that are  "Affiliates."  For purposes of the Plan,
the term  "Affiliates"  shall mean (i) all "executive  officers" as that term is
defined in Rule 16a-1(f)  promulgated  under the  Securities and Exchange Act of
1934 as amended (the "1934 Act"),  (ii) all directors of the Company,  and (iii)
all persons who own 10% or more of the Company's  issued and outstanding  common
stock. The other group shall be comprised of all eligible persons under the Plan
that are not Affiliates ("Non-Affiliates").

                  (b)  Affiliate  Administration.  The power to  administer  the
Discretionary  Option Grant  Program  with respect to eligible  persons that are
Affiliates shall be vested with a committee (the "Senior  Committee") of two (2)
or more non-employee Board members appointed by the Board. No Board member shall
be eligible to serve on the Senior  Committee if such individual has, within the
relevant  period  designated  below,  received an option  grant or direct  stock
issuance  under this Plan (not  including any option grants made pursuant to the
Automatic  Option Grant Program set forth in Article IV) or any other stock plan
of the Corporation (or any parent or subsidiary corporation):
                                        3

                           (i) for each of the initial members of the Committee,
the period  commencing  with the Effective  Date of the Plan and ending with the
date of his or her appointment to the Senior Committee, or

                           (ii) for any  successor  or  substitute  member,  the
twelve-month period immediately  preceding the date of his or her appointment to
the Senior  Committee or (if shorter) the period  commencing  with the Effective
Date of the Plan and  ending  with  the  date of his or her  appointment  to the
Senior Committee.

                  (c) Non-Affiliate Administration.  The power to administer the
Discretionary Option Grant Program with respect to eligible persons that are not
Non-Affiliates  shall be vested with the Board. The Board,  however,  may at any
time appoint a committee (the  "Employee  Committee") of one or more persons who
are members of the Board and delegate to such Employee  Committee the power,  in
whole or in part, to  administer  the  Discretionary  Stock Option Grant Program
with respect to the Non-Affiliates.

                  (d) Term on Committee. Members of the Senior Committee and the
Employee  Committee  shall  serve  for  such  period  of time as the  Board  may
determine and shall be subject to removal by the Board at any time. The Board at
any time may terminate the functions of the Employee  Committee and reassume all
powers and authority previously delegated to such Committee.

                  (e) Authority of Plan Administrators.  The Board, the Employee
Committee,  and the Senior  Committee,  whichever is  applicable,  shall each be
referred to herein as a "Plan Administrator." Each Plan Administrator shall have
the authority and discretion,  with respect to its administered group, to select
which eligible persons shall participate in the Plan. Unless otherwise  required
by law,  decisions  among members of a Plan  Administrator  shall be by majority
vote. With respect to each administered group, the applicable Plan Administrator
shall have full power and  authority  (subject to the express  provisions of the
Plan) to establish such rules and regulations as it may deem appropriate for the
proper administration of the Discretionary Option Grant Program and to make such
determinations  under, and issue such interpretations of, the provisions of such
programs and any outstanding  option grants or stock issuances  thereunder as it
may deem  necessary or  advisable.  All decisions  made by a Plan  Administrator
shall be final and binding on all parties in its administered  group who have an
interest in the  Discretionary  Option Grant Program or any  outstanding  option
thereunder.  The Plan Administrator shall also have full authority to determine,
with respect to the option grants made under the  Discretionary  Option Program,
the number of shares to be covered by each such grant, the status of the granted
option as either an incentive stock option ("Incentive  option") which satisfies
the requirements of Section
                                       4

422 of the Internal Revenue Code or a non-statutory  option not intended to meet
such  requirements,  the time or times at which each granted option is to become
exercisable and the maximum term for which the option may remain outstanding.

                  (f)  Indemnification.  In  addition  to such  other  rights of
indemnification as they may have, the members of each Plan  Administrator  shall
be indemnified and held harmless by the Company,  to the extent  permitted under
applicable law, for, from and against all costs and expenses reasonably incurred
by them in connection with any action, legal proceeding to which any such member
thereof  may be a party,  by reason of any  action  taken or failed to be taken,
under or in  connection  with the Plan or any  rights  granted  thereunder,  and
against  all  amounts  paid  by them in  settlement  thereof  or paid by them in
satisfaction  of a judgment of any such  action,  suit or  proceeding,  except a
judgment based upon a finding of bad faith.

         1.4      ELIGIBLE PERSONS UNDER THE PLAN

                  (a) Discretionary  Option Grant Program.  The persons eligible
to participate in the Discretionary Option Grant Program under Article II are as
follows:

                           (i)   officers   and  other  key   employees  of  the
Corporation (or its parent or subsidiary corporations) who render services which
contribute to the  management,  growth and financial  success of the Corporation
(or its parent or subsidiary corporations);

                           (ii)  non-employee  members  of the Board  (excluding
those current members of the Senior Committee); and

                           (iii)   those   consultants   or  other   independent
contractors who provide  valuable  services to the Corporation (or its parent or
subsidiary corporations).

                  (b) Automatic  Option Grant Program.  The persons  eligible to
participate  in  the  Automatic   Option  Grant  Program  shall  be  limited  to
non-employee Board members. A non-employee Board member shall not be eligible to
participate in the Automatic Option Grant Program,  however,  if such individual
has at any time been in the prior  employ of the  Corporation  (or any parent or
subsidiary corporation).  Unless otherwise provided in the Plan, persons who are
eligible  under the  Automatic  Option  Grant  Program  may also be  eligible to
receive  option  grants under the  Discretionary  Option Grant Program in effect
under this Plan.
                                       5

         1.5      STOCK SUBJECT TO THE PLAN

                  (a)  Amendment.   Under  the  Plan,   6,072,227   shares  were
originally  authorized  to be  issued  under  the Plan  (constituting  5,565,977
authorized  shares  under  the 1989  Plan and  rolled  over  into this Plan plus
506,250 additional shares authorized by the Board on January 19, 1993). On April
23, 1993, an additional  2,193,750 shares were authorized by the Board,  subject
to stockholder  approval at the next stockholders'  meeting.  At that point, the
total available  authorized  shares were  8,265,977.  On September 14, 1993, the
Board authorized the number of shares of Common Stock issuable under the Plan to
be increased by 2,281,500  shares.  On April 18, 1994, the Board  authorized the
number of shares of Common  Stock  issuable  under the Plan to be  increased  by
2,925,000  shares.  On January 20, 1995 and April 26, 1995, the Board authorized
the number of shares of Common Stock  issuable under the Plan to be increased by
1,425,000 shares, subject to Stockholder approval,  such that the maximum number
of shares  issuable  for the term of the Plan  shall be as set forth in  Section
1.5(b) below.

                  (b) Available Shares. Shares of the Corporation's common stock
(the "Common Stock") shall be available for issuance under the Plan and shall be
drawn from either the  Corporation's  authorized  but unissued  shares of Common
Stock or from reacquired shares of Common Stock, including shares repurchased by
the Corporation on the open market. The maximum number of shares of Common Stock
which  may be  issued  over the term of the Plan  shall  not  exceed  14,897,477
shares,  subject  to  adjustment  from  time  to  time in  accordance  with  the
provisions  of this Section 1.5. To the extent one or more  outstanding  options
under the 1989 Plan which have been incorporated into this Plan (as adjusted for
the 1993 Stock Dividend) are subsequently exercised, the number of shares issued
with respect to each such option shall reduce, on a  share-for-share  basis, the
number of shares available for issuance under this Plan.

                  (c) Adjustments for Issuances.  Should one or more outstanding
options  under  this Plan  (including  outstanding  options  under the 1989 Plan
incorporated  into  this  Plan)  expire or  terminate  for any  reason  prior to
exercise in full,  then the shares  subject to the portion of each option not so
exercised  shall be available for  subsequent  option grant under the Plan.  All
share  issuances  under the Plan,  whether or not the  shares  are  subsequently
repurchased by the Corporation pursuant to its repurchase rights under the Plan,
shall  reduce on a  share-for-share  basis the number of shares of Common  Stock
available for subsequent  option grants under the Plan. In addition,  should the
exercise  price of an  outstanding  option under the Plan  (including any option
incorporated  from the 1989 Plan) be paid with shares of Common
                                       6

Stock or should  shares of Common  Stock  otherwise  issuable  under the Plan be
withheld by the Corporation in satisfaction of the withholding taxes incurred in
connection  with the exercise of an outstanding  option under the Plan, then the
number of shares of Common Stock  available for issuance under the Plan shall be
reduced by the gross number of shares for which the option is exercised, and not
by the net  number  of  shares of Common  Stock  actually  issued to the  option
holder.

                  (d) Adjustments for Organic Changes. Should any change be made
to the Common Stock issuable under the Plan by reason of any stock split,  stock
dividend,  recapitalization,  combination of shares, exchange of shares or other
change   affecting  the  outstanding   Common  Stock  as  a  class  without  the
Corporation's  receipt of consideration,  then appropriate  adjustments shall be
made to (i) the maximum  number  and/or class of securities  issuable  under the
Plan,  (ii) the number and/or class of securities  and price per share in effect
under each  option  outstanding  under  either the  Discretionary  Option  Grant
Program or the Automatic  Option Grant Program and (iii) the number and/or class
of  securities  and  price per share in effect  under  each  outstanding  option
incorporated  into  this  Plan  from  the 1989  Plan.  Such  adjustments  to the
outstanding  options  are to be effected in a manner  which shall  preclude  the
enlargement  or  dilution  of  rights  and  benefits  under  such  options.  The
adjustments determined by the Board shall be final, binding and conclusive.  The
amount of options granted automatically under the Automatic Option Grant Program
on the Annual Automatic Grant Date and on the Initial Automatic Grant Date shall
not be adjusted  regardless  of any  organic  changes  made to the Common  Stock
issuable under the Plan.

                  (e)  Limitations on Grants to Employees.  Notwithstanding  any
other provision herein to the contrary, the following limitations shall apply to
grants of options to Employees:

                           (i) No employee shall be granted,  in any fiscal year
of the  Corporation,  options  to  purchase  more than  three  hundred  thousand
(300,000) shares.

                           (ii)  In   connection   with   his  or  her   initial
employment,  an Employee may be granted  options to purchase up to an additional
five hundred  thousand  (500,000) shares which shall not count against the limit
set forth in subsection (i) above.

                           (iii) The  foregoing  limitations  shall be  adjusted
proportionately   in   connection   with  any   change   in  the   Corporation's
capitalization as described in Section 1.5(d).

                           (iv) If an option  is  cancelled  in the same  fiscal
year of the  Corporation  in  which  such  option  was  granted  (other  than in
connection with a transaction described in Section
                                       7

1.5(d)),  the  cancelled  option will be counted  against the limit set forth in
Section  1.5(e)(i).  For this  purpose,  if the  exercise  price of an option is
reduced, the transaction will be treated as a cancellation of the option and the
grant of a new option.

                                   ARTICLE II
                       DISCRETIONARY OPTION GRANT PROGRAM
                       ----------------------------------

         2.1      TERMS AND CONDITIONS OF OPTIONS

                  (a) General. Options granted to eligible persons ("Optionees")
pursuant to the Discretionary  Option Grant Program set forth in this Article II
shall be  authorized  by  action  of the  Plan  Administrator  and,  at the Plan
Administrator's  discretion,  may be either  Incentive  Options or non-statutory
options.  Individuals  who are not Employees of the Corporation or its parent or
subsidiary  corporations may only be granted non-statutory options. Each granted
option shall be evidenced by one or more instruments in the form approved by the
Plan Administrator;  provided,  however,  that each such instrument shall comply
with the terms and conditions  specified  below.  Each instrument  evidencing an
Incentive Option shall, in addition,  be subject to the applicable provisions of
Section 2.2 hereof.

                  (b) Option Price. The option price per share shall be fixed by
the Plan Administrator in accordance with the following provisions:

                           (i) The option  price per share of the  Common  Stock
subject  to an  Incentive  Option  shall in no event  be less  than one  hundred
percent  (100%) of the fair market value of such Common Stock on the grant date;
and

                           (ii) The option  price per share of the Common  Stock
subject  to a  non-statutory  stock  option  shall in no event be less  than one
hundred  percent  (100%) of the fair market  value of such  Common  Stock on the
grant date.

                  (c) Payment of Option  Price.  The option  price shall  become
immediately  due upon  exercise of the option and shall be payable in one of the
following alternative forms specified below:

                           (i)  full  payment  in cash  or  check  drawn  to the
Corporation's order;

                           (ii) full payment  through a  broker-dealer  sale and
remittance   procedure   pursuant  to  which  the  Optionee  (A)  shall  provide
irrevocable  written  instructions to a designated  brokerage firm to effect the
immediate sale of the purchased shares and remit to the Corporation,  out of the
sale proceeds  available on the
                                       8

settlement  date,  sufficient  funds to cover the aggregate option price payable
for the  purchased  shares  plus all  applicable  Federal  and State  income and
employment  taxes required to be withheld by the  Corporation in connection with
such purchase and (B) shall provide  written  directives to the  Corporation  to
deliver the  certificates  for the purchased  shares  directly to such brokerage
firm in order to complete the sale transaction.

For purposes of this  Section  2.1(c),  the  Exercise  Date shall be the date on
which  written  notice of the option  exercise is delivered to the  Corporation.
Except to the extent the sale and remittance procedure is utilized in connection
with the exercise of the option,  payment of the option price for the  purchased
shares must accompany such notice.

                  (d) Fair  Market  Value.  The fair  market  value per share of
Common Stock shall be determined in accordance with the following provisions:

                           (i) If the Common  Stock is not at the time listed or
admitted to trading on any national  stock  exchange but is traded on the NASDAQ
National  Market  System,  the fair market value shall be the closing  price per
share  on the  date in  question,  as such  price is  reported  by the  National
Association of Securities  Dealers  through the NASDAQ National Market System or
any  successor  system.  If there is no reported  closing  selling price for the
Common Stock on the date in question, then the closing selling price on the last
preceding date for which such quotation  exists shall be  determinative  of fair
market value.

                           (ii) If the  Common  Stock is at the time  listed  or
admitted to trading on any national stock  exchange,  then the fair market value
shall be the  closing  selling  price per share on the date in  question  on the
exchange  determined by the Plan  Administrator to be the primary market for the
Common  Stock,  as such  price is  officially  quoted in the  composite  tape of
transactions  on such exchange.  If there is no reported sale of Common Stock on
such  exchange on the date in question,  then the fair market value shall be the
closing  selling price on the exchange on the last preceding date for which such
quotation exists.

                  (e) Term and Exercise of Options.  Each option  granted  under
this  Discretionary  Option Grant Program shall be  exercisable  at such time or
times and during such period as is determined by the Plan  Administrator and set
forth in the instrument  evidencing the grant.  No such option,  however,  shall
have a maximum term in excess of ten (10) years from the grant date.  During the
lifetime of the Optionee,  the option shall be exercisable  only by the Optionee
and shall not be assignable or  transferable  by the
                                       9

Optionee other than by will or by the laws of descent and distribution following
the Optionee's death.

                  (f)  Termination of Service.  The following  provisions  shall
govern the exercise  period  applicable to any  outstanding  options held by the
Optionee at the time of cessation of Service or death:

                           (i) Should an Optionee  cease  Service for any reason
(including  permanent  disability as defined in Section 22(e)(3) of the Internal
Revenue  Code but not  including  death) while  holding one or more  outstanding
options  under this Article II, then none of those  options shall (except to the
extent otherwise  provided pursuant to Section 2.1(g) below) remain  exercisable
for more  than a ninety  (90) day  period  (or such  shorter  or  longer  period
determined by the Plan Administrator and set forth in the instrument  evidencing
the grant,  but not to exceed twelve (12) months) measured from the date of such
cessation of Service.

                           (ii)  Any  option  held by the  Optionee  under  this
Article II and  exercisable  in whole or in part on the date of his or her death
may be subsequently  exercised by the personal  representative of the Optionee's
estate or by the person or persons to whom the option is transferred pursuant to
the Optionee's will or in accordance with the laws of descent and  distribution.
Such exercise,  however, must occur prior to the earlier of six months following
the date of  optionee's  death or the  specified  expiration  date of the option
term.  Upon the occurrence of the earlier event,  the option shall terminate and
cease to be outstanding.

                           (iii) Under no circumstances, however, shall any such
option be exercisable after the specified expiration date of the option term.

                           (iv)  During  the  applicable  post-Service  exercise
period,  the option shall not be exercisable  for more than the number of shares
(if any) in which the Optionee is vested at the time of his or her  cessation of
Service (less any option shares subsequently  purchased by the Optionee prior to
death). Upon the expiration of the limited  post-Service  exercise period or (if
earlier) upon the specified expiration date of the option term, each such option
shall  terminate and cease to be  outstanding  with respect to any vested shares
for which the option has not otherwise been exercised. However, each outstanding
option shall immediately  terminate and cease to be outstanding,  at the time of
the  Optionee's  cessation of Service,  with respect to any shares for which the
option is not otherwise at that time exercisable or in which the Optionee is not
otherwise at that time vested.

                           (v) Should (A) the  optionee's  service be terminated
for misconduct  (including,  but not limited to, any act
                                       10

of dishonesty,  willful  misconduct,  fraud or embezzlement) or (B) the Optionee
make any  unauthorized  use or disclosure of  confidential  information or trade
secrets of the Corporation or its parent or subsidiary corporations, then in any
such event all  outstanding  options held by the Optionee  under this Article II
shall terminate immediately and cease to be outstanding.

                  (g) Discretion to Accelerate  Vesting.  The Plan Administrator
shall have  complete  discretion,  exercisable  either at the time the option is
granted or at any time while the option  remains  outstanding,  to permit one or
more options held by the Optionee under this Article II to be exercised,  during
the limited post-Service  exercise period applicable under Section 2.1(f) above,
not only with  respect to the number of vested  shares of Common Stock for which
each such  option is  exercisable  at the time of the  optionee's  cessation  of
Service but also with respect to one or more  subsequent  installments of vested
shares for which the option would  otherwise  have become  exercisable  had such
cessation of Service not occurred.

                  (h)   Discretion   to  Extend   Exercise   Period.   The  Plan
Administrator  shall also have full power and  authority to extend the period of
time for which the  option is to remain  exercisable  following  the  Optionee's
cessation of Service or death from the limited  period in effect  under  Section
2.1(f) above to such greater period of time as the Plan Administrator shall deem
appropriate.  In no event,  however,  shall such option be exercisable after the
specified expiration date of the option term.

                  (i) Definitions.  For purposes of the foregoing  provisions of
this  Section 2.1 (and for all other  purposes  under the  Discretionary  Option
Grant Program):

                           (i)  The  Optionee   shall   (except  to  the  extent
otherwise  specifically  provided in the applicable  stock option  agreement) be
deemed to remain in Service for so long as such individual renders services on a
periodic basis to the Corporation  (or any parent or subsidiary  corporation) in
the  capacity  of  an  Employee,  a  non-employee  member  of  the  Board  or an
independent consultant or advisor.

                           (ii)  The  Optionee  shall  be  considered  to  be an
Employee  for so long as he or she remains in the employ of the  Corporation  or
one or more  parent or  subsidiary  corporations,  subject  to the  control  and
direction  of the employer  entity not only as to the work to be  performed  but
also as to the manner and method of performance.

                  (j) Stockholder  Rights. An Optionee shall have no stockholder
rights with respect to any shares  covered by the option
                                       11

until such individual  shall have exercised the option and paid the option price
for the purchased shares.

                  (k)  Repurchase  Rights.  The shares of Common Stock  acquired
upon the exercise of any Article II option grant may be subject to repurchase by
the Corporation in accordance with the following provisions:

                           (i) The Plan Administrator  shall have the discretion
to authorize the issuance of unvested  shares of Common Stock under this Article
II. Should the Optionee  cease Service while holding such unvested  shares,  the
Corporation  shall  have the right to  repurchase  any or all of those  unvested
shares at the option price paid per share.  The terms and conditions  upon which
such repurchase  right shall be exercisable  (including the period and procedure
for exercise and the  appropriate  vesting  schedule for the  purchased  shares)
shall be established by the Plan  Administrator  and set forth in the instrument
evidencing such repurchase right.

                           (ii) All of the Corporation's  outstanding repurchase
rights  under this  Article  II shall  automatically  terminate,  and all shares
subject to such  terminated  rights  shall  immediately  vest in full,  upon the
occurrence of any Corporate  Transaction under Section 2.3 hereof, except to the
extent:  (A) any such  repurchase  right is expressly  assigned to the successor
corporation (or parent thereof) in connection with the Corporate  Transaction or
(B) such accelerated  vesting is precluded by other  limitations  imposed by the
Plan Administrator at the time the repurchase right is issued.

                           (iii)   The  Plan   Administrator   shall   have  the
discretionary  authority,  exercisable  either  before or after  the  Optionee's
cessation of Service, to cancel the Corporation's  outstanding repurchase rights
with  respect to one or more shares  purchased  or  purchasable  by the Optionee
under this Discretionary Option Grant Program and thereby accelerate the vesting
of such shares in whole or in part at any time.

         2.2      INCENTIVE OPTIONS

                  (a) General. The terms and conditions specified below shall be
applicable to all incentive  options  ("Incentive  Options")  granted under this
Article II pursuant  to Section 422 of the  Internal  Revenue  Code of 1986,  as
amended (the "Code").  Incentive  Options may only be granted to individuals who
are employees of the Corporation.  Options which are specifically  designated as
"non-statutory"  options when issued under the Plan shall not be subject to such
terms and conditions.
                                       12

                  (b)  Dollar  Limitation.   The  aggregate  fair  market  value
(determined as of the respective date or dates of grant) of the Common Stock for
which one or more Incentive  Options granted to any Employee under this Plan (or
any  other  option  plan  of  the   Corporation  or  its  parent  or  subsidiary
corporations) may for the first time become  exercisable during any one calendar
year shall not exceed the sum of One Hundred Thousand Dollars ($100,000). To the
extent  the  Employee  holds two or more such  Incentive  Options  which  become
exercisable  for the  first  time  in the  same  calendar  year,  the  foregoing
limitation on the  exercisability of such options as Incentive Options under the
federal  tax laws  shall be  applied  on the  basis of the  order in which  such
Incentive  Options are granted.  Should the number of shares of Common Stock for
which any Incentive Option first becomes exercisable in any calendar year exceed
the applicable One Hundred  Thousand  Dollar  ($100,000)  limitation,  then that
option may nevertheless be exercised in that calendar year for the excess number
of shares as a non-statutory option under the federal tax laws.

                  (c) 10%  Stockholder.  If any  individual to whom an Incentive
Option is  granted  is the  owner of stock (as  determined  under  Code  Section
424(d))  possessing ten percent (10%) or more of the total combined voting power
of  all  classes  of  stock  of the  Corporation  or any  one of its  parent  or
subsidiary corporations,  then the option price per share shall not be less than
one hundred and ten percent  (110%) of the fair market value per share of Common
Stock on the grant  date,  and the  option  term shall not  exceed  five  years,
measured from the grant date.

                  (d)   Application.   Except  as  modified  by  the   preceding
provisions  of this Section 2.2, the  provisions  of Articles I, II and V of the
Plan shall apply to all Incentive Options granted hereunder.

         2.3      CORPORATE TRANSACTIONS

                  (a)  Definition.  For  purposes  of  this  Plan,  any  of  the
following  stockholder approved transactions to which the Corporation is a party
shall be considered a "Corporate Transaction":

                           (i)  a  merger   or   consolidation   in  which   the
corporation is not the surviving entity,  except for a transaction the principal
purpose  of  which  is  to  change  the  State  in  which  the   Corporation  is
incorporated,

                           (ii) the sale,  transfer or other  disposition of all
or substantially all of the assets of the Corporation in complete liquidation or
dissolution of the Corporation, or
                                       13

                           (iii) any reverse merger in which the  Corporation is
the surviving entity but in which securities  possessing more than fifty percent
(50%)  of the  total  combined  voting  power of the  Corporation's  outstanding
securities are  transferred  to person or persons  different from those who held
such securities immediately prior to such merger.

                  (b) Acceleration of Option. Upon the stockholder approval of a
Corporate  Transaction,  each option which is at the time outstanding under this
Article  II shall  automatically  accelerate  so that  each such  option  shall,
immediately prior to the specified effective date for the Corporate Transaction,
become  fully  exercisable  with respect to the total number of shares of Common
Stock at the time  subject to such  option and may be  exercised  for all or any
portion of such shares.  However,  an  outstanding  option under this Article II
shall not so accelerate if and to the extent:  (A) such option is, in connection
with  the  Corporate  Transaction,   either  to  be  assumed  by  the  successor
corporation  or parent  thereof or to be replaced  with a  comparable  option to
purchase  shares of the capital  stock of the  successor  corporation  or parent
thereof,  (B) such option is to be replaced with a cash incentive program of the
successor  corporation which preserves the option spread existing at the time of
the Corporate  Transaction and provides for subsequent payout in accordance with
the same vesting schedule  applicable to such option, or (C) the acceleration of
such option is subject to other limitations imposed by the Plan Administrator at
the time of the option grant. The  determination of option  comparability  under
clause (A) above shall be made by the Plan Administrator,  and its determination
shall be final, binding and conclusive.

                  (c)  Termination  of  Options.  Upon the  consummation  of the
Corporate  Transaction,  all  outstanding  options  under this  Article II shall
terminate  and cease to be  outstanding,  except to the  extent  assumed  by the
successor corporation or its parent company.

                  (d)   Adjustments   on   Assumption  or   Continuation.   Each
outstanding option under this Article II which is assumed in connection with the
Corporate   Transaction   or  is  otherwise  to  continue  in  effect  shall  be
appropriately adjusted,  immediately after such Corporate Transaction,  to apply
and pertain to the number and class of  securities  which would have been issued
to the option holder,  in consummation of such Corporate  Transaction,  had such
person  exercised the option  immediately  prior to such Corporate  Transaction.
Appropriate  adjustments  shall also be made to the  option  price  payable  per
share,  provided the aggregate  option price payable for such  securities  shall
remain the same. In addition,  the class and number of securities  available for
issuance under the Plan following the consummation of the Corporate  Transaction
shall be appropriately adjusted.
                                       14

                  (e) Discretion to  Accelerate.  The Plan  Administrator  shall
have the discretion,  exercisable either in advance of any  actually-anticipated
Corporate  Transaction  or at the time of an actual  Corporate  Transaction,  to
provide  (upon  such  terms  as it  may  deem  appropriate)  for  the  automatic
acceleration of one or more outstanding options granted under the Plan which are
assumed or replaced in the Corporate Transaction and do not otherwise accelerate
at that time, in the event the Optionee's Service should subsequently  terminate
within a  designated  period  following  the  effective  date of such  Corporate
Transaction.

                  (f) Plan Not to Affect Corporation. The grant of options under
this Article II shall in no way affect the right of the  Corporation  to adjust,
reclassify,  reorganize or otherwise change its capital or business structure or
to merge, consolidate,  dissolve,  liquidate or sell or transfer all or any part
of its business or assets.

         2.4      CHANGE IN CONTROL

                  (a) Definition. For purposes of this Plan, a Change in Control
shall be deemed to occur in the event:

                           (i) any  person or related  group of  persons  (other
than the  Corporation  or a person that  directly  or  indirectly  controls,  is
controlled  by, or is under common control with,  the  Corporation)  directly or
indirectly  acquires  beneficial  ownership (within the meaning of Rule 13d-3 of
the 1934 Act) of  securities  possessing  more than fifty  percent  (50%) of the
total combined voting power of the Corporation's outstanding securities pursuant
to a tender or exchange  offer made directly to the  Corporation's  stockholders
which the Board does not recommend such stockholders to accept; or

                           (ii)  there is a  change  in the  composition  of the
Board over a period of twenty-four (24)  consecutive  months or less such that a
majority of the Board members  (rounded up to the next whole number) ceases,  by
reason of one or more proxy  contests for the election of Board  members,  to be
comprised of  individuals  who either (a) have been Board  members  continuously
since the  beginning of such period or (b) have been  elected or  nominated  for
election as Board members during such period by at least a majority of the Board
members  described  in  clause  (a) who were  still in  office  at the time such
election or nomination was approved by the Board.

                  (b) Discretion to  Accelerate.  The Plan  Administrator  shall
have the discretionary authority,  exercisable either in advance of any actually
anticipated Change in Control or at the time of an actual Change in Control,  to
provide for the automatic  acceleration of one or more outstanding options under
this  Article
                                       15

II  (and  the  termination  of one or  more  of  the  Corporation's  outstanding
repurchase  rights under this Article II) upon the  occurrence  of the Change in
Control.  The Plan  Administrator  shall also have full power and  authority  to
condition any such option  acceleration  (and the termination of any outstanding
repurchase  rights) upon the subsequent  termination  of the Optionee's  Service
within a specified period following the Change in control.

                  (c) Exercise  Rights.  Any options  accelerated  in connection
with the Change in Control shall remain fully  exercisable  until the expiration
or sooner termination of the option term.

                  2.5      INCENTIVE OPTIONS.

                  The   exercisability  as  Incentive  Options  of  any  options
accelerated  under  Sections  2.3 or 2.4 hereof in  connection  with a Corporate
Transaction or Change in Control shall remain  subject to the dollar  limitation
of Section 2.2 hereof.




                                   ARTICLE III
                                    RESERVED
                                    --------

                                   ARTICLE IV
                         AUTOMATIC OPTION GRANT PROGRAM
                         ------------------------------

         4.1      TERMS AND CONDITIONS OF AUTOMATIC OPTION GRANTS.

                  (a)  Amount  and Date of Grant.  During the term of this Plan,
automatic  option grants (the  "Automatic  Option  Grant") shall be made to each
eligible non-employee member of the Board ("Optionee") as follows:

                           (i) Each year on the Annual  Automatic  Grant Date an
option to  acquire  5,000  shares of Common  Stock  ("Option  Shares")  shall be
granted to each eligible  non-employee  member of the Board for so long as there
are shares of Common  Stock  available  under  Section 1.5  hereof.  The "Annual
Automatic  Grant  Date"  shall be as of the first  business  day of the month in
which the Corporation's Annual Stockholders Meeting is held. Notwithstanding the
foregoing,  (1) any non-Employee Member of the Board whose term ended as of such
Automatic  Grant Date shall not be  eligible  to receive  any  automatic  option
grants on that Annual  Automatic Grant Date and (2) any  non-Employee  Member of
the Board who has received an Automatic Grant pursuant to Section  4.1(a)(ii) on
the same  date as the  Annual  Automatic  Grant  Date or  within  30 days  prior
thereto,
                                       16

shall not be  eligible  to  receive an  Automatic  Option  Grant on that  Annual
Automatic Grant Date.

                           (ii) On the Initial  Automatic Grant Date,  every new
member of the Board who is an eligible  non-Employee and has not previously been
a member of the Board  shall be granted an option to  acquire  10,000  shares of
Common  Stock  ("Option  Shares")  as long as there are  shares of Common  Stock
available under Section 1.5 hereof.  The "Initial Automatic Grant Date" shall be
as of the date that the Optionee was first appointed or elected to the Board.

                  (b) Exercise Price.  The  exercise  price  per share of Common
Stock subject to each automatic option grant made under this Article IV shall be
equal to 100% of the fair  market  value  per share of the  Common  Stock on the
applicable  Automatic Grant Date, as determined in accordance with the valuation
provisions of Section 2.1(d) hereof.

                  (c) Method of  Exercise.  In order to  exercise an option with
respect to any Option Shares for which an Automatic  Option Grant is exercisable
at the time,  Optionee (or in the case of an exercise  after  Optionee's  death,
Optionee's  executor,  administrator,  heir or legatee, as the case may be) must
take the following action:

                           (i)  execute  and  deliver  to the  Secretary  of the
Company a written notice of exercise;

                           (ii)  pay the  aggregate  Option  Price in one of the
alternate forms as set forth in Section 4.1(d) below; and

                           (iii)  furnish  appropriate  documentation  that  the
person or persons  exercising  the option (if other than the  Optionee)  has the
right to exercise  such option.  As soon after the Exercise  Date (as defined in
Section 4.1(e) hereof), as practical, the Company shall mail or deliver to or on
behalf of the Optionee (or any other person or persons exercising this option in
accordance  herewith) a certificate or certificates  representing the shares for
which the option has been  exercised in accordance  with the  provisions of this
Plan. In no event may any option be exercised for any fractional shares.

                  (d) Payment Price.  The exercise price shall be payable in one
of the alternative forms specific below:

                           (i) full payment in cash or check made payable to the
Corporation's order; or

                           (ii)  full  payment  through  a sale  and  remittance
procedure  pursuant to which the  non-employee  Board  member (A) shall  provide
irrevocable  written  instructions to a designated  brokerage
                                       17

firm to effect  the  immediate  sale of the  purchased  shares  and remit to the
Corporation,  out  of the  sale  proceeds  available  on  the  settlement  date,
sufficient funds to cover the aggregate exercise price payable for the purchased
shares and shall (B) concurrently  provide written directives to the Corporation
to deliver the  certificates for the purchased shares directly to such brokerage
firm in order to complete the sale transaction.

                  (e)  Exercise  Date.  For  purposes  of this  Article  IV, the
Exercise Date shall be the date on which written  notice of the option  exercise
is delivered to the  Corporation,  and the fair market value per share of Common
Stock on any  relevant  date  under  this  Article  IV shall  be  determined  in
accordance  with the provisions of Section  2.1(d) hereof.  Except to the extent
the sale and remittance  procedure  specified above is utilized for the exercise
of the  potion,  payment  of the  option  price for the  purchased  shares  must
accompany the exercise notice.

                  (f) Term of Option.  Each  automatic  option  grant under this
Article  IV shall  have a  maximum  term of ten  (10)  years  measured  from the
Automatic Grant Date. Should Optionee's  service as a Board member cease for any
reason while an option remains outstanding and unexercised, then the option term
shall  immediately  terminate and the option shall cease to be outstanding prior
to the Expiration Date in accordance with the following provisions:

                           (i) The option shall immediately  terminate and cease
to be  outstanding  for any shares of Common  Stock for which the option was not
otherwise exercisable at the time of Optionee's cessation of Board service.

                           (ii) Should Optionee cease, for any reason other than
death,  to serve as a member of the Board,  then Optionee shall have a six-month
period  measured  from the date of such  cessation of Board  service in which to
exercise the options  which vested prior to the time of such  cessation of Board
service. In no event,  however, may any option be exercised after the Expiration
Date of such option.

                           (iii) Should  Optionee  die while  serving as a Board
member or within six months after cessation of Board service,  then the personal
representative  of the  Optionee's  estate (or the person or persons to whom the
option is transferred  pursuant to the Optionee's will or in accordance with the
laws of descent and  distribution)  shall have the right to exercise  any option
for any or all of the  shares of  Common  Stock  for  which  the  option  is, in
accordance  with the  provisions  of this Plan,  exercisable  at the time of the
Optionee's cessation of Board service, less any shares subsequently purchased by
the Optionee pursuant to the option prior to death. Such right shall cease to be
exercisable  and the option  shall  accordingly  terminate  with  respect to all
Common Stock
                                       18

available  under  such  option  by the  earlier  of (A)  the  expiration  of the
twelve-month  period  measured  from  the  date of  Optionee's  death or (B) the
Expiration Date.

                  (g) Vesting.  Each  Automatic  Option  Grant made  pursuant to
Section  4.1(a)(i) shall become  exercisable and vest in a series of twelve (12)
equal and successive  monthly  installments,  with the first such installment to
become  exercisable  one month  after the  Annual  Automatic  Grant  Date.  Each
Automatic  Option  Grant  made  pursuant  to  Section  4.1(a)(ii)  shall  become
exercisable   and  vest  in  a  series  of  36  equal  and  successive   monthly
installments,  with the first such  installment to become  exercisable one month
after the Initial Automatic Grant Date. Each installment of an option shall only
vest and become  exercisable  if the Optionee has not ceased  serving as a Board
member as of such installment date.

                  (h) Limited Transferability. Each Automatic Option Grant shall
be exercisable only by Optionee during Optionee's  lifetime and shall be neither
transferable  nor  assignable,  other than by will or by the laws of descent and
distribution following Optionee's death.

         4.2      CORPORATE TRANSACTION

                  In  the  event  of   stockholder   approval   of  a  Corporate
Transaction  (as that term is  defined  in  Section  2.3(a)),  then all  options
granted pursuant to this Article IV (to the extent outstanding at such time, but
not otherwise fully exercisable and vested) shall  automatically  accelerate and
immediately  vest so that the option shall,  immediately  prior to the specified
effective date for the Corporate  Transaction,  become fully exercisable for all
of the Option  Shares at the time  subject to the option and may  thereafter  be
exercised  for any or all  such  Option  Shares.  Upon the  consummation  of the
Corporate Transaction, the option shall, to the extent not previously exercised,
terminate and cease to be outstanding.

         4.3      CHANGE IN CONTROL

                  All options granted  pursuant to an Automatic Option Agreement
under this  Article  IV (to the  extent  outstanding,  but not  otherwise  fully
exercisable  and vested) shall  automatically  accelerate  in connection  with a
Change in Control  (as that term is defined  in  Section  2.4(a)),  so that such
option shall, immediately prior to the effective date of such Change in Control,
become  fully  exercisable  for all of the Option  Shares at the time subject to
that  option and may be  exercised  for any or all of such  Option  Shares.  The
option  shall  remain  so  exercisable  until  such  option  has  terminated  in
accordance with Section 4.1(d) hereof.
                                       19

         4.4      MISCELLANEOUS PROVISIONS

                  (a) Corporation  Rights.  The Automatic Option Grants shall in
no way affect the right of the Corporation to adjust, reclassify,  reorganize or
otherwise  change its capital or business  structure  or to merge,  consolidate,
dissolve,  liquidate  or sell or  transfer  all or any part of its  business  or
assets.

                  (b) Privilege of Stock  Ownership.  An Optionee shall not have
any of the rights of a  stockholder  with  respect to Option  Shares  until such
individual  shall have  exercised  the option and paid the option  price for the
Option Shares.


                                    ARTICLE V
                                 MISCELLANEOUS
                                 -------------

         5.1      AMENDMENT OF THE PLAN AND AWARDS

                  (a) Board  Authority.  The Board has  complete  and  exclusive
power and  authority to amend or modify the Plan (or any  component  thereof) in
any or all respects  whatsoever.  However,  no such  amendment  or  modification
shall,  without the consent of the  Corporation's  stockholders,  disqualify any
option  previously  granted under the Plan for treatment as an Incentive Option,
or adversely  affect rights and obligations  with respect to options at the time
outstanding under the Plan, unless the Optionee or Participant  consents to such
amendment.  In  addition,  the  Board  may  not,  without  the  approval  of the
Corporation's  stockholders,  amend  the  Plan to (i)  materially  increase  the
maximum  number  of shares  issuable  under the  Plan,  except  for  permissible
adjustments under Section 1.5(d) or extend the term of the Plan, (ii) materially
modify the eligibility  requirements for plan  participation or (iii) materially
increase the benefits accruing to plan participants.

                  (b) Options Issued Prior to Stockholder  Approval.  Options to
purchase  shares of Common Stock may be granted under the  Discretionary  Option
Grant  Program and the  Automatic  Option  Grant  Program  prior to any required
stockholder  approvals,  provided, any shares actually issued under the Plan are
held in escrow  until  stockholder  approval is  obtained.  If such  stockholder
approval is not obtained  within  twelve (12) months of the meeting of the Board
approving the Plan or any  amendments,  then (i) any  unexercised  options shall
terminate and cease to be exercisable  and (ii) the  Corporation  shall promptly
refund the purchase price paid for any excess shares  actually  issued under the
Plan and held in escrow,  together with interest (at the  applicable  Short Term
Federal Rate) for the period the shares were held in escrow.
                                       20

                  (c) Rule  16b-3  Plan.  With  respect  to  persons  subject to
Section 16 of the 1934 Act,  the Plan is intended to comply with all  applicable
conditions  of Rule 16b-3 (and all  subsequent  revisions  thereof)  promulgated
under the 1934 Act. To the extent any revision of the Plan or action by any Plan
Administrator  fails to so  comply,  it shall be deemed  null and  void,  to the
extent  permitted  by law and deemed  advisable by such Plan  Administrator.  In
addition,  the Board may amend the Plan from time to time as it deems  necessary
in order to meet the  requirements  of any  amendments to Rule 16b-3 without the
consent of the shareholders of the Company.

         5.2      TAX WITHHOLDING

                  (a) General. The Corporation's obligation to deliver shares of
Common Stock upon the  exercise of stock  options for such shares or the vesting
of such  shares  under the Plan  shall be  subject  to the  satisfaction  of all
applicable  Federal,  State and local income tax and employment tax  withholding
requirements.

                  (b) Shares to Pay for Withholding.  A Plan  Administrator may,
in its discretion  and in accordance  with the provisions of this Section 5.2(b)
and such  supplemental  rules as the Plan  Administrator  may from  time to time
adopt  (including  the  applicable  safe-harbor  provisions  of SEC Rule 16b-3),
provide any or all holders of non-statutory options or unvested shares under the
Plan  with  the  right  to use  shares  of the  Corporation's  Common  Stock  in
satisfaction  of all or part of the  Federal,  State  and local  income  tax and
employment  tax  liabilities  incurred by such  holders in  connection  with the
exercise of their  options or the vesting of their  shares (the  "Taxes").  Such
right may be  provided  to any such  holder  in either or both of the  following
formats:

                           (i) Stock Withholding. The holder of the nonstatutory
option  or  unvested  shares  may be  provided  with  the  election  to have the
Corporation  withhold,  from the shares of Common Stock otherwise  issuable upon
the  exercise  of such  non-statutory  option or the vesting of such  shares,  a
portion  of those  shares  with an  aggregate  fair  market  value  equal to the
percentage of the applicable  Taxes (not to exceed one hundred  percent  (100%))
designated by the holder.

                           (ii) Stock Delivery.  The Plan  Administrator may, in
its discretion,  provide the holder of the non-statutory  option or the unvested
shares  with  the  election  to  deliver  to the  Corporation,  at the  time the
non-statutory  option is  exercised  or the shares  vest,  one or more shares of
Common Stock previously  acquired by such individual (other than pursuant to the
transaction  triggering  the Taxes) with an aggregate fair market value equal to
the percentage of the taxes incurred in connection  with such option
                                       21

exercise or share vesting (not to exceed one hundred percent (100%))  designated
by the holder.

         5.3      EFFECTIVE DATE AND TERM OF PLAN

                  (a)   Effective   Date.   This  Plan,   as  successor  to  the
Corporation's  1989 Stock Option  Plan,  become  effective as of the  applicable
Effective  Date, and no further option grants or stock  issuances  shall be made
under the 1989 Plan from and after such Effective Date.

                  (b)  Incorporation  of  1989  Plan.  Each  option  issued  and
outstanding  under the 1989 Plan immediately  prior to the Effective Date of the
Discretionary  Option Grant  Program  shall be  incorporated  into this Plan and
treated as an  outstanding  option  under this Plan,  but each such option shall
continue to be governed  solely by the terms and  conditions  of the  instrument
evidencing  such  grant,  and  nothing in this Plan shall be deemed to affect or
otherwise  modify the rights or  obligations of the holders of such options with
respect to their acquisition of shares of Common Stock thereunder.

                  (c) Discretion. The option and vesting acceleration provisions
of Article II relating to Corporate  Transactions and Changes in Control may, in
the Plan  Administrator's  discretion,  be extended to one or more stock options
which  are  outstanding  under  the  1989  Plan  on the  Effective  Date  of the
Discretionary  Option Grant Program but which do not otherwise  provide for such
acceleration.

                  (d)  Termination  of Plan.  The Plan shall  terminate upon the
earlier of (i) January  19, 2003 or (ii) the date on which all shares  available
for issuance  under the Plan shall have been issued  pursuant to the exercise of
options  granted under the Plan. If the date of termination is determined  under
clause  (i)  above,   then  all  option  grants  and  unvested  stock  issuances
outstanding on such date shall  thereafter  continue to have force and effect in
accordance  with the  provisions of the  instruments  evidencing  such grants or
issuances.

         5.4      USE OF PROCEEDS

                  Any cash proceeds received by the Corporation from the sale of
shares  pursuant  to  option  grants  under the Plan  shall be used for  general
corporate purposes.

         5.5      REGULATORY APPROVALS

                  (a) General.  The  implementation of the Plan, the granting of
any option under the Plan, and the issuance of Common
                                       22

Stock upon the exercise or surrender of the option grants made  hereunder  shall
be  subject  to the  Corporation's  procurement  of all  approvals  and  permits
required  by  regulatory  authorities  having  jurisdiction  over the Plan,  the
options granted under it, and the Common Stock issued pursuant to it.

                  (b)  Securities  Registration.  No shares  of Common  Stock or
other assets shall be issued or delivered under this Plan unless and until there
shall have been compliance with all applicable requirements of Federal and State
securities  laws,  including  the  filing  and  effectiveness  of the  Form  S-8
registration  statement for the shares of Common Stock  issuable under the Plan,
and all applicable  listing  requirements  of any  securities  exchange on which
stock of the same class is then listed.

         5.6      NO EMPLOYMENT/SERVICE RIGHTS

                  Neither  the action of the  Corporation  in  establishing  the
Plan,  nor  any  action  taken  by the  Plan  Administrator  hereunder,  nor any
provision of the Plan shall be construed so as to grant any individual the right
to  remain  in the  employ  or  service  of the  Corporation  (or any  parent or
subsidiary corporation) for any period of specific duration, and the Corporation
(or  any  parent  or  subsidiary  corporation  retaining  the  services  of such
individual)  may terminate such  individual's  employment or service at any time
and for any reason, with or without cause.

         5.7      MISCELLANEOUS PROVISIONS

                  (a)  Assignment.  The right to acquire  Common  Stock or other
assets under the Plan may not be assigned,  encumbered or otherwise  transferred
by any Optionee or  Participant.  The  provisions of the Plan shall inure to the
benefit of, and be binding upon, the  Corporation and its successors or assigns,
whether  by  Corporate  Transaction  or  otherwise,  and  the  Participants  and
Optionees,   the  legal  representatives  of  their  respective  estates,  their
respective heirs or legatees and their permitted assignees.

                  (b) Choice of Law. The  provisions of the Plan relating to the
exercise of options  and the vesting of shares  shall be governed by the laws of
the State of Arizona,  as such laws are applied to  contracts  entered  into and
performed in such State.

                  (c) Plan Not  Exclusive.  This Plan is not  intended to be the
exclusive  means by which the  Corporation  may issue  options  or  warrants  to
acquire its shares of Common Stock, stock awards or issuances, or any other type
of award or issuance.  To the extent permitted by applicable law, any such other
option,  warrants,
                                       23

issuance,  or awards may be issued by the Company,  other than  pursuant to this
Plan, without shareholder approval.
                                       24

         EXECUTED as of the 25th day of April, 1997.



                                        MICROCHIP TECHNOLOGY CORPORATION,
                                        a Delaware corporation


                                        By: /s/ Steve Sanghi
                                            ------------------------------------
                                                Steve Sanghi

                                                Its:  Chairman  of the  Board,
                                                President  and  Chief Executive
                                                Officer



Attested by:


/s/ C. Philip Chapman
- ------------------------------------
C. Philip Chapman
Secretary


/s/ Mary Simmons-Mothershed
- ------------------------------------
Mary Simmons-Mothershed
Assistant Secretary
                                       25