News Release

• Consolidated Operations Information - Earnings Before Goodwill
• Consolidated Balance Sheet
• Appendix 1 - Consolidated Statement of Operations
• Appendix 2 - Earnings Per Share Reconciliation

                                      Three months ended
                                          July 3, 1999                    Three months ended
                                      ---------------------    ------------------------------------------
Description                           Lattice    Vantis (2)    July 3, 1999  April 3, 1999  June 27, 1998
------------------------------------- -------    ----------    ------------  -------------  -------------
Revenue                               $56,638     $3,100         $59,738        $53,788        $48,028

Costs and expenses:
   Costs of products sold              21,441      1,440          22,881         20,743         19,109
   Research and development             8,809      1,080           9,889          8,877          7,895
   Selling, general and administrative  9,288      1,557          10,845          9,476          9,005
                                      -------    ----------    ------------  -------------  -------------
       Total costs and expenses        39,538      4,077          43,615         39,096         36,009
                                      -------    ----------    ------------  -------------  -------------
Income (loss) from operations          17,100       (977)         16,123         14,692         12,019

Other income (loss), net                2,281       (476)          1,805          2,860          2,523
                                      -------    ----------    ------------  -------------  -------------

Income (loss) before provision (benefit)
   for income taxes                    19,381     (1,453)         17,928         17,552         14,542

Provision (Benefit) for income taxes    6,202       (465)          5,737          5,704          4,726

Tax shield                                  0        614             614              0              0
                                      -------    ----------    ------------  -------------  -------------

Earnings Before Goodwill (EBG)        $13,179      ($374)        $12,805        $11,848         $9,816
                                      =======    ==========    ============  =============  =============

Diluted EBG per share                   $0.54                      $0.53          $0.49          $0.41
                                      =======                  ============  =============  =============

Shares used in per share calculations  24,357                     24,357         24,199         23,858
                                      =======                  ============  =============  =============

Notes:

1. This table presents operating information which is consistent with the information reported by First Call, IBES and Zacks for Lattice Semiconductor Corporation. A Statement of Operations based on GAAP is attached as Appendix 1. A reconciliation of Earnings Before Goodwill (Intangible Assets) to GAAP on a per share basis is attached as Appendix 2.
2. Vantis operations information is for the period from acquisition, June 16, 1999, through July 3, 1999. As required by GAAP, this information excludes revenue and cost of sales from the indirect channel (distribution) while including all operating expenses and revenue and cost of sales from the direct channel.

                                       July 3,        April 3,
Description                             1999           1999
----------------------------------  -----------     -----------  
                                    (unaudited)
    Assets
Current assets:
   Cash and short-term investments    $155,896        $319,434
   Accounts receivable                  32,305          23,788
   Inventories                          24,422          17,683
   Other current assets                 21,656          20,461
                                    -----------     -----------  

            Total current assets       234,279         381,366

Property and equipment, net             55,825          44,993
Foundry investments, advances and
        other assets                   126,505         114,537
Intangible assets, net (1)             418,369               -
Deferred tax asset                      29,813               -
                                    -----------     -----------  

                                      $864,791        $540,896
                                    ===========     ===========  

Liabilities and Stockholders' Equity

Current liabilities:
   Accounts payable and other accrued
          liabilities                 $119,734         $32,184
   Bank borrowings (2)                  25,000               -
   Deferred income on sales to
        distributors                    22,988          19,993
   Income taxes payable                  8,025           4,985
                                    -----------     -----------  

            Total current liabilities  175,747          57,162
                                    -----------     -----------  

Bank borrowings (2)                    227,999               -
Other long-term liabilities              1,250               -
                                    -----------     -----------  
                                       229,249               -

Stockholders' equity                   459,795         483,734
                                    -----------     -----------  

                                      $864,791        $540,896
                                    ===========     ===========  

Notes:

1. Goodwill (intangible assets) is $422.533 million after In Process Research and Development charges of $89.003 million. Amortization of $4.164 million based on eighteen days is calculated using the straight line method over five years.
2. Bank financing of $280 million was arranged in connection with the acquisition of Vantis Corporation and is unsecured. Of this amount, $220 million is a three year term loan with scheduled repayments beginning in March 2000 and $60 million is a revolving credit line repayable in May 2002 of which approximately $33 million is currently outstanding.

Appendix 1

                                                     Three months ended
                                                     ------------------
Description                            July 3, 1999(1)  April 3, 1999  June 27, 1998
-------------------------------------- ---------------  -------------  -------------
Revenue                                   $59,738          $53,788        $48,028

Costs and expenses:
   Costs of products sold                  22,881           20,743         19,109
   Research and development                 9,889            8,877          7,895
   Selling, general and administrative     10,845            9,476          9,005
   In-Process research and development (2) 89,003                -              -
   Amortization of intangible assets (3)    4,164                -              -
                                       ---------------  -------------  -------------

       Total costs and expenses           136,782           39,096         36,009
                                       ---------------  -------------  -------------
(Loss) Income from operations             (77,044)          14,692         12,019

Other income, net                           1,805            2,860          2,523
                                       ---------------  -------------  -------------

(Loss) Income before provision
       for income taxes                   (75,239)          17,552         14,542

(Benefit) Provision for income taxes      (24,076)           5,704          4,726
                                       ---------------  -------------  -------------

Net (loss) income                        ($51,163)         $11,848         $9,816
                                       ===============  =============  =============

Basic net (loss) income per share          ($2.16)           $0.50          $0.42
                                       ===============  =============  =============

Diluted net (loss) income per share        ($2.16)           $0.49          $0.41
                                       ===============  =============  =============

Shares used in per share calculations:

       Basic net (loss) income             23,652           23,538         23,490
                                       ===============  =============  =============

       Diluted net (loss) income           23,652           24,199         23,858
                                       ===============  =============  =============

Notes:

1. Includes operations of Vantis Corporation for the period from acquisition, June 16, 1999, through July 3, 1999 and purchase accounting adjustments. This information for Vantis excludes revenue and cost of sales from the indirect channel (distribution) as required by GAAP while including all operating expenses and revenue and cost of sales from the direct channel.
2. In Process Research and Development charges are $89.003 million and represent the appraised value of research and development work being performed by Vantis Corporation on June 16, 1999, the acquisition date.
3. Goodwill (intangible assets) is $422.533 million after In Process Research and Development charges of $89.003 million. Amortization of $4.164 million based on eighteen days is calculated using the straight line method over five years.

Appendix 2

                                        Three months ended (unaudited)
                                        ------------------------------
Description                        July 3, 1999   April 3, 1999   June 27, 1998
------------------------           ------------   -------------   -------------
                                                   (per share)
Earnings Before Goodwill               $0.53          $0.49           $0.41

Less:
In-Process research and
     development charges (2)          ($2.53)
Amortization of intangible assets (3) ($0.12)
Tax shield (4)                         $0.02
Difference in share count (5)         ($0.06)
                                   ------------   -------------   -------------

Net (Loss) Income Per Share           ($2.16)         $0.49           $0.41
                                   ============   =============   =============

Notes:

1. This table reconciles Earnings Before Goodwill per share information to Diluted Net (Loss) Income per share which is presented in Appendix 1.
2. In Process Research and Development charges are $89.003 million and represent the appraised value of research and development work being performed by Vantis Corporation on June 16, 1999, the acquisition date.
3. Goodwill (intangible assets) is $422.533 million after In-process research and development charges of $89.003 million. Amortization of $4.164 million based on eighteen days is calculated using the straight line method over five years.
4. Tax Shield represents the current period tax deduction available from amortizing intangible assets ($511.536 million) over 15 years on a straight line basis using a 36.5% tax rate.
5. Share count difference in earnings per share calculations results from the inclusion of equivalent shares representing outstanding stock options in periods with profits and exclusion of such equivalent shares in periods with losses.