ZILOG INC
SC 13G/A, 1997-03-04
SEMICONDUCTORS & RELATED DEVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934
                               (Amendment No. 4 )*


                                   ZILOG, INC.
                                (Name of Issuer)


                                  COMMON STOCK
                         (Title of Class of Securities)


                                    98952410
                                 (CUSIP Number)


*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

                                 Page 1 of Pages
<PAGE>
                                  SCHEDULE 13G

- -----------------------------------------------------------------------------
CUSIP No. 98952410                                Page 2 OF PAGES
- -----------------------------------------------------------------------------
 1         NAME OF REPORTING PERSON
           S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
           Warburg, Pincus Capital Company, L.P.

- ---------------------------------------------------------------------------
 2         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                           (a)
- ---------------------------------------------------------------------------
                                                           (b)      X
- ---------------------------------------------------------------------------
 3         SEC USE ONLY

- ---------------------------------------------------------------------------
 4         CITIZENSHIP OR PLACE OF ORGANIZATION

           Delaware
- ---------------------------------------------------------------------------
          NUMBER OF              5         SOLE VOTING POWER
           SHARES
- ---------------------------------------------------------------------------
        BENEFICIALLY             6         SHARED VOTING POWER
          OWNED BY                         5,378,004
- ---------------------------------------------------------------------------
            EACH                 7         SOLE DISPOSITIVE POWER
          REPORTING
- ---------------------------------------------------------------------------
           PERSON                8         SHARED DISPOSITIVE POWER
            WITH                           5,378,004
- ---------------------------------------------------------------------------
 9         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           5,378,004
- ---------------------------------------------------------------------------
10         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
            SHARES*

- ---------------------------------------------------------------------------
11         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           26.8%
- ---------------------------------------------------------------------------
12         TYPE OF REPORTING PERSON*

           PN
- ---------------------------------------------------------------------------

                      * SEE INSTRUCTIONS BEFORE FILING OUT!
<PAGE>

                                  SCHEDULE 13G

- -----------------------------------------------------------------------------
CUSIP No. 98952410                          Page 3 OF PAGES
- -----------------------------------------------------------------------------
 1         NAME OF REPORTING PERSON
           S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
           E.M. Warburg, Pincus & Company, LLC
- ----------------------------------------------------------------------------
 2         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                         (a)
- ----------------------------------------------------------------------------
                                                         (b)      X
- ---------------------------------------------------------------------------
 3         SEC USE ONLY

- ---------------------------------------------------------------------------
 4         CITIZENSHIP OR PLACE OF ORGANIZATION

           New York
- ---------------------------------------------------------------------------
          NUMBER OF              5         SOLE VOTING POWER
           SHARES
- ----------------------------------------------------------------------------
        BENEFICIALLY             6         SHARED VOTING POWER
          OWNED BY                         5,378,004
- ----------------------------------------------------------------------------
            EACH                 7         SOLE DISPOSITIVE POWER
          REPORTING
- ----------------------------------------------------------------------------
           PERSON                8         SHARED DISPOSITIVE POWER
            WITH                           5,378,004
- ---------------------------------------------------------------------------
 9         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           5,378,004
- ---------------------------------------------------------------------------
10         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
            SHARES*

- -----------------------------------------------------------------------------
11         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           26.8%
- ------------------------------------------------------------------------------
12         TYPE OF REPORTING PERSON*

           00
- ----------------------------------------------------------------------------

                      * SEE INSTRUCTIONS BEFORE FILING OUT!

<PAGE>
                                  SCHEDULE 13G

- ---------------------------------------------------------------------------
CUSIP No. 98952410                            Page 4 OF PAGES
- ---------------------------------------------------------------------------
 1         NAME OF REPORTING PERSON
           S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
           Warburg, Pincus & Co.

- ---------------------------------------------------------------------------
 2         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                         (a)
- ---------------------------------------------------------------------------
                                                         (b)      X
- ---------------------------------------------------------------------------
 3         SEC USE ONLY

- ---------------------------------------------------------------------------
 4         CITIZENSHIP OR PLACE OF ORGANIZATION

           New York
- ---------------------------------------------------------------------------
          NUMBER OF              5         SOLE VOTING POWER
           SHARES                           99,500
- ---------------------------------------------------------------------------
        BENEFICIALLY             6         SHARED VOTING POWER
          OWNED BY                         5,378,004
- --------------------------------------------------------------------------
            EACH                 7         SOLE DISPOSITIVE POWER
          REPORTING                         99,500 
- --------------------------------------------------------------------------
           PERSON                8         SHARED DISPOSITIVE POWER
            WITH                           5,378,004
- --------------------------------------------------------------------------
 9         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           5,477,504
- --------------------------------------------------------------------------
10         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
            SHARES*

- ---------------------------------------------------------------------------
11         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           27.3%
- --------------------------------------------------------------------------
12         TYPE OF REPORTING PERSON*

           PN
- --------------------------------------------------------------------------

                      * SEE INSTRUCTIONS BEFORE FILING OUT!

<PAGE>

ITEM 1(A).        NAME OF ISSUER:

                  Zilog, Inc.

ITEM 1(B).        ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

                  210 East Hacienda Avenue
                  Campbell, CA 95008

Items 2(a),
(B) AND (C).      NAME OF PERSON FILING; ADDRESS OF PRINCIPAL BUSINESS
                  OFFICE; CITIZENSHIP:

                  This statement is being filed by (a) Warburg, Pincus Capital
Company, L.P., a Delaware limited partnership ("WPC"); (b) E.M. Warburg, Pincus
& Company, LLC, a New York limited liability company ("EMW"), whose members are
substantially the same as the partners of Warburg, Pincus & Co.; and (c)
Warburg, Pincus & Co., a New York general partnership ("WP"). WP, as the sole
general partner of WPC, has a 20% interest in the profits of WPC. EMW has
entered into a management agreement with WPC for the management of all
investments made by it. Lionel I. Pincus is the managing partner of WP and the
managing member of EMW and may be deemed to control them. The business address
of each of the foregoing is 466 Lexington Avenue, New York, New York 10017.

ITEM 2(D).        TITLE OF CLASS OF SECURITIES:

                  Common Stock

ITEM 2(E).        CUSIP NUMBER:

                  98952410

ITEM 3.           Not Applicable

ITEM 4.           OWNERSHIP:

                  (a)      5,477,504
                  (b)      27.3%
                  (c)         (i)              99,500
                             (ii)           5,378,004
                            (iii)              99,500
                             (iv)           5,378,004

ITEM 5.           OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:

                  Not Applicable

ITEM 6.           OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER
                  PERSON:

                  Not Applicable

ITEM 7.           IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH
                  ACQUIRED THE SECURITY BEING REPORTED  ON BY THE PARENT HOLDING
                  COMPANY:

                  Not Applicable

ITEM 8.           IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP:

                  Not Applicable

ITEM 9.           NOTICE OF DISSOLUTION OF GROUP:

                  Not Applicable

ITEM 10.          CERTIFICATION:

                  Not Applicable

                  
<PAGE>

                                    SIGNATURE


         After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.


                            WARBURG, PINCUS CAPITAL COMPANY, L.P.

                            By:      Warburg, Pincus & Co.,
                                     General Partner


                            By:/s/ Stephen Distler
                                   Stephen Distler, Partner


                            E. M. WARBURG, PINCUS & COMPANY, LLC


                            By:/s/ Stephen Distler
                                   Stephen Distler, Member


                            WARBURG, PINCUS & CO.

                            By:/s/ Stephen Distler
                                   Stephen Distler, Partner

Dated:  February 24, 1997



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