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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



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FORM 10-K/A

Amendment No. 1



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(Mark One)

|x | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------------

For the fiscal year ended December 30, 2005

OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

Commission file number 000-29617



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INTERSIL CORPORATION

(Exact name of
Registrant as specified in its charter)



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|                                                              |  |                                    
|------------------------------------------------------------- |  | -----------------------------------
|Delaware                                                      |  | 59-3590018                         
|(State or other jurisdiction ofincorporation or organization) |  | (I.R.S. EmployerIdentification No.)
|                                                              | 
|1001 Murphy Ranch Road, Suite 1Milpitas, California           |  | 95035                              
|(Address of principal executive offices)                      |  | (Zip Code)                         

408-945-1323

Registrants telephone number, including area code



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Securities registered pursuant to Section 12(b) of the Act:

None

Securities registered pursuant to Section 12(g) of the Act:

Title of class

Class A Common Stock, par value $0.01 per share

Series A Junior Participating Preferred Stock Purchase Rights



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Indicate by
check mark whether the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes ̈No  x

Indicate by check mark whether the registrant
(1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 (Act) during the preceding 12 months (or for such shorter period that the registrant was required to file such
reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No ̈

Indicate by check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the Registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K
or any amendment to this Form 10-K.  x

Indicate by check mark if the registrant is a
large accelerated filer, an accelerated filer, or a non-accelerated filer (as defined in Rule 12b-2 of the Act).    Large accelerated filer  x    Accelerated
filer ̈Non-accelerated filer ̈

Indicate by check mark whether the registrant is a shell company (as
defined in Rule 12b-2 of the Act).    Yes ̈No  x

The aggregate market value of our Class A Common Stock, par value $.01 per share, held by
non-affiliates (based upon the closing sale price of $19.00 on the Nasdaq National Market System) on July 1, 2005 was approximately $2,666.9 million.

As of February 24, 2006 there were 142,201,567 shares of our Class A Common Stock, par value $.01 per share, outstanding.

DOCUMENTS INCORPORATED BY REFERENCE



|                                                                                                 |  |                              
|------------------------------------------------------------------------------------------------ |  | -----------------------------
|Document                                                                                         |  | Parts Into Which Incorporated
|Proxy Statement for the Annual Meeting of Shareholders to be held May 10, 2006 (Proxy Statement) |  | Part III                     



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EXPLANATORY NOTE

In accordance with Exchange Act Rule 12b-15, this Amendment No. 1 on Form 10-K/A amends Item 9A. Controls and Procedures of the Annual Report on Form 10-K of Intersil Corporation (the Registrant)
for the annual period ended December 30, 2005 filed with the Securities and Exchange Commission on March 6, 2006, and presents the complete text of the items amended with the amended text underlined to reflect an insertion. The insertion
relates to an affirmative statement relating to managements conclusion that no change in internal control over financial reporting occurred during the Companys fiscal fourth quarter ended December 30, 2005.

This amended item does not restate the Registrants consolidated financial statements previously filed in the Form 10-K. This Form 10-K/A does not reflect events
occurring after the filing of the original Form 10-K or modify or update those disclosures affected by subsequent events.



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INTERSIL CORPORATION

FORM 10-K/A

December 30, 2005

TABLE OF CONTENTS



|                                 |  |  
|-------------------------------- |  | -
|PART II                          |  |  
|Item 9A.
Controls and Procedures |  | 1

Exhibits



|      |  |                                                                                                                                                                                                                           
|----- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|      | 
|31.01 |  | Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) of the Exchange Act, as adopted by Section 302 of the Sarbanes-Oxley Act of 2002.*                                                                    
|      | 
|31.02 |  | Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) of the Exchange Act, as adopted by Section 302 of the Sarbanes-Oxley Act of 2002.*                                                                    
|      | 
|32.01 |  | Certification of the Chief Executive Officer and Chief Financial Officer Pursuant to Rule 13a-14(b) of the Exchange Act and 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002.*

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|* | Filed herewith.
|- | ---------------



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Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (Disclosure Controls) as
of the end of the period covered by this Form 10-K. The controls evaluation was conducted under the supervision and with the participation of management, including our CEO and CFO. Disclosure Controls are controls and procedures designed to
reasonably assure that information required to be disclosed in our reports filed under the Exchange Act, such as this Form 10-K, is recorded, processed, summarized and reported within the time periods specified in the U.S. Securities and Exchange
Commissions (SECs) rules and forms. Disclosure Controls are also designed to reasonably assure that such information is accumulated and communicated to our management, including the CEO and CFO, as appropriate to allow timely decisions
regarding required disclosure. Our quarterly evaluation of Disclosure Controls includes an evaluation of some components of our internal control over financial reporting, and internal control over financial reporting is also separately evaluated on
an annual basis for purposes of providing the management report, which is set forth below.

The evaluation of our Disclosure Controls
included a review of the controls objectives and design, the companys implementation of the controls and the effect of the controls on the information generated for use in this Form 10-K. In the course of the controls evaluation, we
reviewed identified data errors, control problems or acts of fraud and sought to confirm that appropriate corrective actions, including process improvements, were being undertaken. This type of evaluation is performed on a quarterly basis so that
the conclusions of management, including the CEO and CFO, concerning the effectiveness of the Disclosure Controls can be reported in our periodic reports on Form 10-Q and Form 10-K. Many of the components of our Disclosure Controls are also
evaluated on an ongoing basis by our Internal Audit, Finance and by other personnel. The overall goals of these various evaluation activities are to monitor our Disclosure Controls, and to modify them as necessary. Our intent is to maintain the
Disclosure Controls as dynamic systems that change as conditions warrant.

Based upon the controls evaluation, our CEO and CFO have
concluded that as of the end of the period covered by this Form 10-K, our Disclosure Controls were effective to provide reasonable assurance that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and
reported within the time periods specified by the SEC, and that material information relating to Intersil and its consolidated subsidiaries is made known to management, including the CEO and CFO, particularly during the period when our periodic
reports are being prepared.

Management Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting to provide reasonable assurance
regarding the reliability of our financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Internal control over financial reporting includes those policies and
procedures that (i) pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are
recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management
and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the companys assets that could have a material effect on the financial
statements.

Management assessed our internal control over financial reporting as of December 30, 2005, the end of our fiscal year.
Management based its assessment on criteria established in Internal Control-Integrated Frameworkissued by the Committee of Sponsoring Organizations of the Treadway Commission. Managements assessment included evaluation of such elements
as the design and operating effectiveness of key financial reporting controls, process documentation, accounting policies, and our overall control environment. This assessment is supported by testing and monitoring by our management and Internal
Audit organizations.

Based on our assessment, management has concluded that our internal control over financial reporting was effective as
of the end of the fiscal year to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external reporting purposes in accordance with generally accepted accounting principles.
Furthermore, management has concluded that no change in internal control over financial reporting occurred during the Companys fiscal fourth quarter ended December 30, 2005 that has materially affected, or is reasonably likely to
materially affect, such internal control over financial reporting. We reviewed the results of managements assessment with the Audit Committee of our Board of Directors.

Our independent registered public accounting firm, Ernst & Young LLP, audited managements assessment and independently assessed the
effectiveness of the companys internal control over financial reporting. Ernst & Young has issued an attestation report, which is included at the beginning of Part II, Item 8 of this Form 10-K.



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Inherent Limitations on Effectiveness of Controls

The companys management, including the CEO and CFO, does not expect that our Disclosure Controls or our internal control over financial reporting
will prevent or detect all error and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control systems objectives will be met. The design of a control system
must reflect the fact that the benefits of controls must be considered relative to their costs. Further, because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to
error or fraud will not occur or that all control issues and instances of fraud, if any, within the company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can
occur because of simple error or mistake. Controls can also be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls is based in part
on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Projections of any evaluation of controls effectiveness to
future periods are subject to risks. Over time, controls may become inadequate because of changes in conditions or deterioration in the degree of compliance with policies or procedures.



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SIGNATURE

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.



INTERSIL CORPORATIONBy:

/s/ David A. ZinsnerDavid A. ZinsnerChief Financial OfficerMay 1, 2006




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