UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION


                             Washington, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT
                         Pursuant to Section 13 or 15(d)
                     of The Securities Exchange Act of 1934


                        Date of Report: October 21, 2004
                        (Date of earliest event reported)


                        LATTICE SEMICONDUCTOR CORPORATION
             (Exact name of registrant as specified in its charter)


       Delaware                      000-18032                 93-0835214
       --------                      ---------                 ----------
      (State of                     (Commission              (IRS Employer
    incorporation)                  File Number)           Identification No.)



  5555 N.E. Moore Court, Hillsboro, Oregon                    97124-6421
  ---------------------------------------------               ----------
     (Address of principal executive offices)                 (Zip Code)


                                 (503) 268-8000
                                 --------------
              (Registrant's telephone number, including area code)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[ ]  Written communications pursuant to Rule 425 under the Securities Act (17
     CFR 230.425)

[ ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
     240.14a-12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))




Item 2.02      RESULTS OF OPERATIONS AND FINANCIAL CONDITION

               Attached hereto as Exhibit 99.1 and incorporated by reference
               herein is financial information for Lattice Semiconductor
               Corporation for the quarter ended October 2, 2004 and
               forward-looking statements relating to 2004 and the fourth
               quarter of 2004 as presented in a press release of October 21,
               2004. The information in this report shall be deemed incorporated
               by reference into any registration statement heretofore or
               hereafter filed under the Securities Act of 1933, as amended,
               except to the extent that such information is superseded by
               information as of a subsequent date that is included in or
               incorporated by reference into such registration statement. The
               information in this report shall not be treated as filed for
               purposes of the Securities Exchange Act of 1934, as amended.










                                   SIGNATURES


Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                           LATTICE SEMICONDUCTOR CORPORATION
                                                     (Registrant)



Date: October 21, 2004                     By: /s/ Jan Johannessen
                                               ---------------------------------
                                                   Jan Johannessen
                                                   Chief Financial Officer


                                                                    EXHIBIT 99.1

    Lattice Semiconductor Reports Third Quarter Financial Results

    HILLSBORO, Ore.--(BUSINESS WIRE)--Oct. 21, 2004--Lattice
Semiconductor Corporation (NASDAQ:LSCC) today announced financial
results for the third quarter ended September 2004.
    Revenue for the third quarter was $57.3 million, a decrease of six
percent from last quarter's revenue of $60.9 million, but up 33
percent from the $43.0 million (restated) in revenue reported for the
same quarter a year ago.
    Quarterly revenue from PLD products was $46.0 million, or 80
percent of total revenue, and declined eight percent sequentially.
Quarterly revenue from FPGA products was $11.3 million, or 20 percent
of total revenue, and grew one percent sequentially. Quarterly revenue
from New products, now 21 percent of total revenue, grew 22 percent
sequentially and nearly doubled on a year over year basis
    Net loss for the third quarter was $6.3 million ($0.06 per share).
This loss includes a $5.8 million charge for amortization of
intangible assets. Excluding this charge, loss for the quarter was
$0.5 million ($0.00 per share). This non-cash amortization charge has
been highlighted as these charges are currently expected to be
substantially eliminated in 2008. The Company believes exclusion of
these charges more closely approximate its cash earnings performance.
A reconciliation of non-GAAP income to GAAP loss accompanies the
financial tables in this earnings release.
    The business continues to generate significant cash from
operations despite the GAAP losses. Last quarter the Company generated
approximately $7 million in cash from operations, which makes the year
to-date operating cash flow approximately $26 million.
    "As expected, third quarter revenue declined as the semiconductor
industry experienced a summer slowdown," stated Cyrus Y. Tsui,
Chairman and Chief Executive Officer. "Unfortunately, we have yet to
see an acceleration of orders in the current quarter and it now
appears that general industry conditions have deteriorated when
compared to the first half of 2004."
    "On a positive note, last quarter we executed superbly on the
roll-out of our recently announced LatticeEC(TM) and
LatticeECP-DSP(TM) new FPGA families", continued Tsui. "We have
released the initial two devices to volume production, secured our
first design-ins and made our first customer shipments. This quarter
we are on track to sample the remaining 10 devices, which when
accomplished, will mark the fastest roll-out of a major new product
family in our corporate history. Additionally, these innovative
devices offer several unique features, previously unavailable from
competitive low-cost, high-volume FPGAs. They are the only low-cost
FPGAs to support 400 Mbps DDR memory interfaces, the only devices to
provide a high performance, flexible DSP block and the only FPGA
families to support industry standard, low-cost, boot PROMs. At this
early stage, we are pleased with the initial market reception and are
optimistic about the market potential for these new FPGA families."

    Business Outlook -- December 2004 Quarter:

    --  Due to subdued industry conditions, quarterly revenue is
        expected to decline to between $51 and $53 million;

    --  Gross margin percentage is expected to be approximately flat;

    --  Total operating expenses are expected to be approximately
        flat;

    --  Intangible asset amortization is expected to be approximately
        $5.8 million; and

    --  Other Income is expected to be approximately $1 million.

    On October 22, 2004, Lattice will hold a telephone conference call
at 5:30 a.m. (Pacific time) with financial analysts. Investors may
listen to our conference call live via the web at www.lscc.com.
Replays of the call will also be available at www.lscc.com. On
December 16, 2004, we plan to publish a "Business Update Statement" on
our website. Our financial guidance will be limited to the comments on
our public quarterly earnings call and these public business outlook
statements. Additionally, during the December 2004 quarter, Lattice
plans to participate in investor conferences sponsored by the American
Electronics Association and Wells Fargo. Specific presentation dates
and times are posted on our website at www.lscc.com.

    The foregoing paragraphs contain forward-looking statements within
the meaning of the federal securities laws including statements about
future quarterly financial results, revenues, customers, product
offerings and the Company's ability to compete. Investors are
cautioned that actual events and results could differ materially from
these statements as a result of a number of factors, including the
possibility that further accounting adjustments may be required and
the effectiveness of changes to the Company's internal controls, as
well as overall semiconductor market conditions, market acceptance and
demand for the Company's new products, the Company's dependencies on
our silicon wafer suppliers, the impact of competitive products and
pricing, and technological and product development risks. The Company
does not intend to update or revise any forward looking statements,
whether as a result of events or circumstances after the date hereof
or to reflect the occurrence of unanticipated events.
    Lattice Semiconductor Corporation, the inventor of in-system
programmable (ISP(TM)) logic products, designs, develops and markets
the broadest range of Field Programmable Gate Arrays (FPGA), Field
Programmable System Chips (FPSCs) and high-performance ISP
Programmable Logic Devices (PLDs), including Complex Programmable
Logic Devices (CPLD), Programmable Analog Components (PAC), and
Programmable Digital Interconnect (GDX). Lattice also offers industry
leading SERDES products. Lattice offers total solutions for today's
system designs by delivering the most innovative programmable silicon
products that embody leading-edge system expertise.
    Lattice products are sold worldwide through an extensive network
of independent sales representatives and distributors, primarily to
OEM customers in the communications, computing, industrial and
military end markets. Company headquarters are located at 5555 N.E.
Moore Court, Hillsboro, Oregon 97124 USA. For more information access
our web site at www.latticesemi.com.

    Lattice Semiconductor Corporation, L (& design), Lattice (&
design) ISP and specific product designations are either registered
trademarks or trademarks of Lattice Semiconductor Corporation or its
subsidiaries in the United States and/or other countries.


                   Lattice Semiconductor Corporation
                 Consolidated Statement of Operations
                 (in thousands, except per share data)
                             (unaudited)

                       Three months ended          Nine months ended
                 ------------------------------- ---------------------
                 Sept. 30, June. 30,  Sept. 30,  Sept. 30,  Sept. 30,
  Description       2004      2004       2003       2004       2003
- ---------------- --------- ---------- --------------------- ----------
Revenue          $ 57,281  $  60,939  $  43,033  $ 177,291  $ 156,905

Costs and
 expenses:
   Costs of
    products
    sold           24,848     26,232     19,431     75,799     65,452
   Research and
    development    23,213     22,599     21,173     68,071     64,707
   Selling,
    general and
    adminis-
    trative        13,630     14,069     12,114     40,786     37,211
   Amortization
    of
    intangible
    assets
    (1)(2)          5,785     17,051     18,665     41,490     58,466
                  --------  ---------  ---------  ---------  ---------
     Total costs
      and
      expenses     67,476     79,951     71,383    226,146    225,836
                  --------  ---------  ---------  ---------  ---------
Loss from
 operations       (10,195)   (19,012)   (28,350)   (48,855)   (68,931)

Other income
 (expense), net     3,989      3,136     (3,611)    10,232     (3,485)
                  --------  ---------  ---------  ---------  ---------
  Loss before
   provision for
   income taxes    (6,206)   (15,876)   (31,961)   (38,623)   (72,416)
Provision
 (benefit) for
 income taxes         118        100     (3,300)       218     (5,854)
                  --------  ---------  ---------  ---------  ---------
Net loss          ($6,324)  ($15,976)  ($28,661)  ($38,841)  ($66,562)
                  ========  =========  =========  =========  =========
Basic net loss
 per share         ($0.06)    ($0.14)    ($0.26)    ($0.34)    ($0.60)
                  ========  =========  =========  =========  =========
Diluted net loss
 per share         ($0.06)    ($0.14)    ($0.26)    ($0.34)    ($0.60)
                  ========  =========  =========  =========  =========
Shares used in
 per share
 calculations:
    Basic         113,181    112,812    111,840    112,871    111,615
                  ========  =========  =========  =========  =========
    Diluted (3)   113,181    112,812    111,840    112,871    111,615
                  ========  =========  =========  =========  =========

Notes:

(1) Intangible assets subject to amortization aggregate $46.0 million,
    net, at September 30, 2004 and relate to the acquisition of
    Cerdelinx Technologies, Inc. on August 26, 2002, the acquisition
    of the FPGA business of Agere Systems, Inc. on January 18, 2002
    and the acquisition of Integrated Intellectual Property Inc. on
    March 16, 2001. These intangible assets are amortized to expense
    generally over three to seven years on a straight-line basis.

(2) Includes $0.7 million, $1.3 million and $0.8 million of deferred
    stock compensation expense for the quarters ended September 30,
    2004, June 30, 2004, September 30, 2003, respectively,
    attributable to Research and Development activities. Includes $2.8
    million, and $4.9 million of deferred stock compensation expense
    for the nine-month periods ended September 30, 2004, and September
    30, 2003, respectively, attributable to Research and Development
    activities.

(3) For all periods presented, the computation of diluted net loss per
    share excludes the effect of stock options and our convertible
    notes as they are antidilutive.


                  Lattice Semiconductor Corporation
                      Consolidated Balance Sheet
                            (in thousands)
                             (unaudited)

                                                   Sept. 30, Dec. 31,
                   Description                         2004      2003
- --------------------------------------------------  --------  --------
                      Assets
Current assets:
   Cash and short-term investments                 $319,398  $277,750
   Accounts receivable, net                          27,001    26,796
   Inventories                                       39,099    46,630
   Other current assets                              47,743    51,537
                                                    --------  --------
            Total current assets                    433,241   402,713

Property and equipment, net                          49,002    53,800
Foundry investments, advances and other assets       74,225    86,883
Goodwill and other intangible assets, net (1)       269,528   308,232
                                                    --------  --------
                                                   $825,996  $851,628
                                                    ========  ========

       Liabilities and Stockholders' Equity

Current liabilities:
   Accounts payable and other accrued liabilities  $ 61,573  $ 28,500
   Deferred income on sales to distributors          16,040    10,564
   Income taxes payable                                  41        37
                                                    --------  --------
            Total current liabilities                77,654    39,101

Zero Coupon Convertible notes due in 2010           169,000   184,000
Other long-term liabilities                          27,056    22,415
                                                    --------  --------
                                                    196,056   206,415

Stockholders' equity                                552,286   606,112
                                                    --------  --------
                                                   $825,996  $851,628
                                                    ========  ========
Note:

(1) At September 30, 2004, includes approximately $223.6 million in
    Goodwill and $46.0 million of other intangible assets, net,
    related to previous acquisitions. The other intangible assets will
    be amortized to expense generally over three to seven years.
    Goodwill is not amortized effective with the March 2002 quarter.


Appendix 1
                     Lattice Semiconductor Corporation
        Consolidated Operations Information- Non-GAAP Basis (1)
                   (in thousands, except per share data)
                             (unaudited)

                         Three months ended         Nine months ended
                    -----------------------------  -------------------
                    Sept. 30, June 30,  Sept. 30,  Sept. 30, Sept. 30,
    Description        2004      2004      2003       2004      2003
- ------------------- --------- --------- ---------  --------- ---------
Revenue             $ 57,281  $ 60,939  $ 43,033   $177,291  $156,905
Costs and expenses:
   Costs of
    products sold     24,848    26,232    19,431     75,799    65,452
   Research and
    development       23,213    22,599    21,173     68,071    64,707
   Selling, general
    and
    administrative    13,630    14,069    12,114     40,786    37,211
                     --------  --------  --------   --------  --------
       Total costs
        and
        expenses      61,691    62,900    52,718    184,656   167,370
                     --------  --------  --------   --------  --------
Loss from
 operations           (4,410)   (1,961)   (9,685)    (7,365)  (10,465)
Other income
 (expense), net        3,989     3,136    (3,611)    10,232    (3,485)
                     --------  --------  --------   --------  --------
Income (loss)
 before provision
 (benefit) for
 income taxes           (421)    1,175   (13,296)     2,867   (13,950)
Provision (benefit)
 for income taxes        118       100    (3,300)       218    (5,854)
                     --------  --------  --------   --------  --------
Non-GAAP earnings      ($539) $  1,075   ($9,996)  $  2,649   ($8,096)
                     ========  ========  ========   ========  ========
Diluted Non-GAAP
 earnings per share
 (2)                  ($0.00) $   0.01    ($0.09)  $   0.02    ($0.07)
                     ========  ========  ========   ========  ========
Shares used in
 calculations        113,181   114,125   111,840    114,222   111,615
                     ========  ========  ========   ========  ========
Notes:

(1) This table presents operating information which is consistent with
    the information reported by First Call, Reuters and Zacks for
    Lattice Semiconductor Corporation. A reconciliation to GAAP on a
    per share basis is attached as Appendix 2.

(2) For the three months ended June 30, 2004, and for the nine months
    ended September 30, 2004 , the computation of diluted Non-GAAP
    earnings includes the effect of stock options but excludes the
    effect of our convertible notes as they are antidilutive. For the
    three months ended September 30, 2004 and September 30, 2003, and
    for the nine months ended September 30, 2003, the computation of
    diluted Non- GAAP loss excludes the effect of both stock options
    and the effect of our convertible notes as they are antidilutive.


Appendix 2
                  Lattice Semiconductor Corporation
                 Non-GAAP Earnings Reconciliation (1)
                             (unaudited)

                           Three months ended       Nine months ended
                      ---------------------------- -------------------
                      Sept. 30, June 30, Sept. 30, Sept. 30, Sept. 30,
     Description         2004     2004      2003      2004      2003
- ------------------------------- -------- --------- --------- ---------
Net loss                ($0.06)  ($0.14)   ($0.26)   ($0.34)   ($0.60)

Add:
Amortization of
 intangible assets       $0.06    $0.15     $0.17     $0.36   $  0.53
                      --------- -------- --------- ---------   -------
Non-GAAP income (loss)   $0.00    $0.01    ($0.09)    $0.02    ($0.07)
                      ========= ========   ======= =========   =======
Notes:

(1) This table reconciles net loss to non-GAAP information, which is
    presented in Appendix 1, on a per-share basis.


Appendix 3
                  LATTICE SEMICONDUCTOR CORPORATION
           - Supplemental Historic Financial Information -
                              (Q3 2004)

Operations Information                        Q304     Q204     Q303
                                           -------- -------- ---------
  Percent of Revenue
                              Gross Margin    56.6%    57.0%     54.8%
                               R&D Expense    40.5%    37.1%     49.2%
                              SG&A Expense    23.8%    23.1%     28.2%
                            Operating Loss   -17.8%   -31.2%    -65.9%
                 Operating Loss (Non-GAAP)    -7.7%    -3.2%    -22.5%

  Depreciation Expense ($000)                4,185    4,366     4,658
  Capital Expenditures ($000)                1,361    4,774     2,300

Balance Sheet Information
  Current Ratio                                5.6      9.8       8.3
  A/R Days Revenue Outstanding                  43       43        57
  Inventory Months                             4.7      4.6       7.5

Revenue % (by Product Family)
  FPGA                                          20%      18%       21%
  PLD                                           80%      82%       79%

Revenue % (by Product Classification(a))
  New                                           21%      16%       15%
  Mainstream                                    43%      43%       52%
  Mature                                        36%      41%       33%

Revenue % (by Geography)
  Americas                                      31%      30%       32%
  Europe (incl. Africa)                         22%      23%       21%
  Asia (incl. ROW)                              47%      47%       47%

Revenue % (by End Market)
  Communications                                50%      51%       49%
  Computing                                     20%      17%       22%
  Other                                         30%      32%       29%

Revenue % (by Channel)
  Direct                                        62%      63%       67%
  Distribution                                  38%      37%       33%

(a) Product Classification:
- ------------------------------------------
New: FPSC, XPLD, XPGA, GDX2, ORCA 4, ispMACH 4000, ispMACH 4000 Z,
ispPAC-PWR

Mainstream: ORCA 3, GDX/V, ispMACH L/V, ispLSI 2000V, ispLSI 5000V,
ispLSI 8000V, ispMACH 5000VG, and Other

Mature: ORCA 2, All 5-Volt CPLDs, All SPLDs

    CONTACT: Lattice Semiconductor Corporation
             Roddy Sloss, 503-268-8000