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                                   EXHIBIT 3.1
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                          CERTIFICATE OF DETERMINATION

                 SERIES D JUNIOR PARTICIPATING PREFERRED SHARES
                                       OF
                        PERICOM SEMICONDUCTOR CORPORATION

     Pursuant to Section 401 of the Corporations Code of the State of
California:

     We, Alex Chi-Ming Hui, President and Chief Executive Officer, and John
Chi-Hung Hui, Secretary, of Pericom Semiconductor Corporation, a corporation
organized and existing under the laws of California (hereinafter called the
"Corporation"), do hereby certify as follows:

     1. On March 6, 2002, the Board of Directors of the Corporation adopted a
resolution designating 400,000 shares of Preferred Stock as Series D Junior
Participating Preferred Stock.

     2. No shares of Series D Junior Participating Preferred Stock have been
issued.


     3. Pursuant to the authority conferred upon the Board of Directors by the
Articles of Incorporation of the Corporation, the following resolution was duly
adopted by the Board of Directors on March 6, 2002 creating the series of
Preferred Stock designated as Series D Junior Participating Preferred Stock:

     RESOLVED FURTHER, That the Board of Directors, to implement the Rights,
pursuant to the authority vested in the Board of Directors of this Corporation
in accordance with the provisions of its Articles of Incorporation, a series of
Preferred Stock of the Corporation be and hereby is created, and that the
determination of the amount thereof and the voting powers, preferences and
relative, participating, optional and other special rights of the shares of such
series, and the qualifications, limitations or restrictions thereof, are as
follows:

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     "Series D Junior Participating Preferred Stock:
      ---------------------------------------------

     Paragraph 1. Designation and Amount. The shares of such series shall be
                  ----------------------
designated as "Series D Junior Participating Preferred Stock" (the "Series D
Preferred Stock") and the number of shares constituting the Series D Preferred
Stock shall be 400,000. Such number of shares may be increased or decreased by
resolution of the Board of Directors; provided, that no decrease shall reduce
                                      --------
the number of shares of Series D Preferred Stock to a number less than the
number of shares then outstanding plus the number of shares reserved for
issuance upon the exercise of outstanding options, rights or warrants or upon
the conversion of any outstanding securities issued by the Corporation
convertible into Series D Preferred Stock.

     Paragraph 2. Dividends and Distributions.
                  ---------------------------

     (A) Subject to the rights of the holders of any shares of any series of
Preferred Stock (or any similar stock) ranking prior and superior to the Series
D Preferred Stock with respect to dividends, the holders of shares of Series D
Preferred Stock, in preference to the holders of Common Stock, no par value (the
"Common Stock"), of the Corporation, and of any other junior stock, shall be
entitled to receive, when, as and if declared by the Board of Directors out of
funds legally available for the purpose, dividends payable in cash (each payment
date determined by the Board of Directors being referred to herein as a
"Dividend Payment Date"), commencing on the first Dividend Payment Date after
the first issuance of a share or fraction of a share of Series D Preferred
Stock, in an amount per share (subject to the provision for adjustment
hereinafter set forth) equal to 100 times the aggregate per share amount of all
cash dividends, and 100 times the aggregate per share amount (payable in kind)
of all non-cash dividends or other distributions, other than a dividend payable
in shares of Common Stock or a subdivision of the outstanding shares of the
Common Stock (by reclassification or otherwise), declared on the Common Stock
since the immediately preceding Dividend Payment Date or, with respect to the
first Dividend Payment Date, since the first issuance of any share or fraction
of a share of Series D Preferred Stock. In the event the Corporation shall at
any time declare or pay any dividend on the Common Stock payable in shares of
Common Stock, or effect a subdivision or combination or consolidation of the
outstanding shares of Common Stock (by reclassification or otherwise than by
payment of a dividend in shares of Common Stock) into a greater or lesser number
of shares of Common Stock, then in each such case the amount to which holders of
shares of Series D Preferred Stock were entitled immediately prior to such event
under the preceding sentence shall be adjusted by multiplying such amount by a
fraction, the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to such
event.

     (B) The Corporation shall declare a dividend or distribution on the Series
D Preferred Stock as provided in paragraph (A) of this Paragraph 2 immediately
after it declares a dividend or distribution on the Common Stock (other than a
dividend payable in shares of Common Stock).

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     (C) The Board of Directors may fix a record date for the determination of
holders of shares of Series D Preferred Stock entitled to receive payment of a
dividend or distribution declared thereon, which record date shall be not more
than 60 days prior to the date fixed for the payment thereof.

     Paragraph 3. Voting Rights. The holders of shares of Series D Preferred
                  -------------
Stock shall have the following voting rights:

     (A) Subject to the provision for adjustment hereinafter set forth, each
share of Series D Preferred Stock shall entitle the holder thereof to 100 votes
on all matters submitted to a vote of the shareholders of the Corporation. In
the event the Corporation shall at any time declare or pay any dividend on the
Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the number of votes per share to which holders of shares of Series D
Preferred Stock were entitled immediately prior to such an event shall be
adjusted by multiplying such number by a fraction, the numerator of which is the
number of shares of Common Stock outstanding immediately after such event and
the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

     (B) Except as otherwise provided herein, in any other Certificate of
Amendment to the Articles of Incorporation or Certificate of Determination
creating a series of Preferred Stock or any similar stock, or by law, the
holders of shares of Series D Preferred Stock and the holders of shares of
Common Stock and any other capital stock of the Corporation having general
voting rights shall vote together as one class on all matters submitted to a
vote of shareholders of the Corporation.

     (C) Except as set forth herein, or as otherwise provided by law, holders of
Series D Preferred Stock shall have no special voting rights and their consent
shall not be required (except to the extent they are entitled to vote with
holders of Common Stock as set forth herein) for taking any corporate action.

     Paragraph 4. Certain Restrictions.
                  --------------------

     (A) Whenever quarterly dividends or other dividends or distributions
payable on the Series D Preferred Stock as provided in Paragraph 2 are in
arrears, thereafter and until all accrued and unpaid dividends and
distributions, whether or not declared, on shares of Series D Preferred Stock
outstanding shall have been paid in full, the Corporation shall not:


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          (i) declare or pay dividends, or make any other distributions, on any
     shares of stock ranking junior (either as to dividends or upon liquidation,
     dissolution or winding up) to the Series D Preferred Stock;

          (ii) declare or pay dividends, or make any other distributions, on any
     shares of stock ranking on a parity (either as to dividends or upon
     liquidation, dissolution or winding up) with the Series D Preferred Stock,
     except dividends paid ratably on the Series D Preferred Stock and all such
     parity stock on which dividends are payable or in arrears in proportion to
     the total amounts to which the holders of all such shares are then
     entitled;

          (iii) redeem or purchase or otherwise acquire for consideration shares
     of any stock ranking junior (either as to dividends or upon liquidation,
     dissolution or winding up) to the Series D Preferred Stock, provided that
     the Corporation may at any time redeem, purchase or otherwise acquire
     shares of any such junior stock in exchange for shares of any stock of the
     Corporation ranking junior (either as to dividends or upon dissolution,
     liquidation or winding up) to the Series D Preferred Stock; or

          (iv) redeem or purchase or otherwise acquire for consideration any
     shares of Series D Preferred Stock, or any shares of stock ranking on a
     parity with the Series D Preferred Stock, except in accordance with a
     purchase offer made in writing or by publication (as determined by the
     Board of Directors) to all holders of such shares upon such terms as the
     Board of Directors, after consideration of the respective annual dividend
     rates and other relative rights and preferences of the respective series
     and classes, shall determine in good faith will result in fair and
     equitable treatment among the respective series or classes.

     (B) The Corporation shall not permit any subsidiary of the Corporation to
purchase or otherwise acquire for consideration any shares of stock of the
Corporation unless the Corporation could, under paragraph (A) of this Paragraph
4, purchase or otherwise acquire such shares at such time and in such manner,
except in connection with any employee benefit plan of the Corporation or any
such subsidiary.

     Paragraph 5. Reacquired Shares. Any shares of Series D Preferred Stock
                  -----------------
purchased or otherwise acquired by the Corporation in any manner whatsoever
shall be retired and canceled promptly after the acquisition thereof. All such
shares shall upon their cancellation become authorized but unissued shares of
Preferred Stock and may be reissued as part of a new series of Preferred Stock
subject to the conditions and restrictions on issuance set forth herein, in the
Articles of Incorporation, or in any other Certificate of Amendment to the
Articles of Incorporation or Certificate of Determination creating a series of
Preferred Stock or any similar stock or as otherwise required by law.

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     Paragraph 6. Liquidation, Dissolution or Winding Up. Upon any liquidation,
                  --------------------------------------
dissolution or winding up of the Corporation, no distribution shall be made (1)
to the holders of shares of stock ranking junior (either as to dividends or upon
liquidation, dissolution or winding up) to the Series D Preferred Stock unless,
prior thereto, the holders of shares of Series D Preferred Stock shall have
received the greater of (a) $100.00 per share, plus an amount equal to accrued
and unpaid dividends and distributions thereon, whether or not declared, to the
date of such payment, or (b) an amount equal to 100 times the aggregate amount
to be distributed per share to holders of shares of Common Stock, or (2) to the
holders of shares of stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with the Series D Preferred Stock,
except distributions made ratably on the Series D Preferred Stock and all such
parity stock in proportion to the total amounts to which the holders of all such
shares are entitled upon such liquidation, dissolution or winding up. In the
event the Corporation shall at any time declare or pay any dividend on the
Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the aggregate amount to which holders of shares of Series D Preferred
Stock were entitled immediately prior to such event under the proviso in clause
(1) of the preceding sentence shall be adjusted by multiplying such amount by a
fraction the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to such
event.

     Paragraph 7. Consolidation, Merger, etc. In case the Corporation shall
                  --------------------------
enter into any consolidation, merger, combination or other transaction in which
the shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then in any such case each share of
Series D Preferred Stock shall at the same time be similarly exchanged or
changed into an amount per share, subject to the provision for adjustment
hereinafter set forth, equal to 100 times the aggregate amount of stock,
securities, cash and/or any other property (payable in kind), as the case may
be, into which or for which each share of Common Stock is changed or exchanged.
In the event the Corporation shall at any time declare or pay any dividend on
the Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock into a greater or lesser number of shares of Common Stock), then in each
such case the amount set forth in the preceding sentence with respect to the
exchange or change of shares of Series D Preferred Stock shall be adjusted by
multiplying such amount by a fraction, the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

     Paragraph 8. No Redemption. The shares of Series D Preferred Stock shall
                  -------------
not be redeemable.

     Paragraph 9. Rank. The Series D Preferred Stock shall rank, with respect to
                  ----
the payment of dividends and the distribution of assets, junior to all
other series of the Corporation's Preferred Stock.

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     Paragraph 10. Amendment. The Articles of Incorporation shall not be amended
                   ---------
in any manner which would materially alter or change the powers, preferences or
special rights of the Series D Preferred Stock so as to affect them adversely
without, in addition to any other vote of shareholders required by law, the
affirmative vote of the holders of at least a majority of the outstanding shares
of Series D Preferred Stock, voting together as a single class.

     Paragraph 11. Fractional Shares. The Series D Preferred Stock may be issued
                   -----------------
in fractions of a share which shall entitle the holder, in proportion to such
holder's fractional shares, to exercise voting rights, receive dividends,
participate in distributions and to have the benefit of all other rights of
holders of the Series D Preferred Stock."

     4. We further declare under penalty of perjury under the laws of the State
of California that the matters set forth in this certificate are true and
correct of our own knowledge.

     Executed on March 6, 2002, at San Jose, California.




                                      ---------------------------------------
                                        Alex Chi-Ming Hui,
                                        President and Chief Executive Officer


                                      ---------------------------------------
                                        John Chi-Hung Hui
                                        Secretary


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