**Exhibit 31.2**

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**CERTIFICATIONOF CHIEF FINANCIAL OFFICER PURSUANT TOSECURITIES EXCHANGE ACT RULES 13a-15(e), AS ADOPTED PURSUANTTO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002**

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I, Mark Voll, certifythat:

 

1.                 I have reviewed this quarterlyreport on Form 10-Q of Techwell, Inc. for the period ended September 30,2008;

 

2.                 Based on my knowledge, this report does notcontain any untrue statement of a material fact or omit to state a materialfact necessary to make the statements made, in light of the circumstances underwhich such statements were made, not misleading with respect to the periodcovered by this report;

 

3.                 Based on my knowledge, the condensedconsolidated financial statements, and other financial information included inthis report, fairly present in all material respects the financial condition,results of operations and cash flows of the registrant as of, and for, theperiods presented in this report;

 

4.                 The registrant’s other certifying officerand I are responsible for establishing and maintaining disclosure controls andprocedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e))and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and15d-15(f)) for the registrant and have:

 

(a)             Designed such disclosure controls and procedures,or caused such disclosure controls and procedures to be designed under oursupervision, to ensure that material information relating to the registrant,including its consolidated subsidiaries, is made known to us by others withinthose entities, particularly during the period in which this report is beingprepared;

 

(b)            Designed such internalcontrol over financial reporting, or caused such internal control overfinancial reporting to be designed under our supervision, to provide reasonableassurance regarding the reliability of financial reporting and the preparationof financial statements for external purposes in accordance with generallyaccepted accounting principles;

 

(c)             Evaluated the effectiveness of the registrant’sdisclosure controls and procedures and presented in this report our conclusionsabout the effectiveness of the disclosure controls and procedures, as of theend of the period covered by this report based on such evaluation; and

 

(d)            Disclosed in this report any change in theregistrant’s internal control over financial reporting that occurred during theregistrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarterin the case of an annual report) that has materially affected, or is reasonablylikely to materially affect, the registrant’s internal control over financialreporting; and

 

5.                 The registrant’s other certifying officerand I have disclosed, based on our most recent evaluation of internal controlover financial reporting, to the registrant’s auditors and the audit committeeof the registrant’s board of directors (or persons performing the equivalentfunctions):

 

(a)             All significant deficiencies and materialweaknesses in the design or operation of internal control over financial reportingwhich are reasonably likely to adversely affect the registrant’s ability torecord, process, summarize and report financial information; and

 

(b)            Any fraud, whether or not material, that involvesmanagement or other employees who have a significant role in the registrant’sinternal control over financial reporting.

 

 
| Date: November 6, 2008                                               |
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|                                                                      |
| /s/ Mark Voll                                                             |   |
| Mark Voll                                                                 |
| Vice President of Finance and  Administration and Chief Financial Officer |

 

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