SigmaTel Delivers FM Tuner Functionality to More Than 30 Design Houses in the Asia-Pacific Region.

TAIPEI, Taiwan -- SigmaTel Inc., (NASDAQ:SGTL), a leader in mixed-signal multimedia solutions, announced that its FM Tuner solution, the STFM1000, has gained traction throughout the Asia-Pacific region with more than 30 customer design wins including customers in Taiwan, Korea, China and Singapore. The STFM1000 is a companion processor for SigmaTel's STMP3500 and STMP3600 families of System on Chip (SoC) portable multimedia solutions and provides optimized radio architecture and support for U.S., Europe, Japan and Asia FM bands.

"Over 30 customers have designed in the STFM1000, including Changhong, LiteOn, Elelux, Digitech, MSI, Transcend, Luxpro and Taiwan Silicon Electronics," said Ron Edgerton, chairman and chief executive officer of SigmaTel.

"SigmaTel's FM Tuner solution allows customers to design unique form factors cost-effectively because of the minimal board footprint," Mr. Edgerton added.

The CMOS implementation provides a reduction in overall system cost and board area by integrating a number of external components typically required by competitive solutions. SigmaTel has filed several patent applications which describe various aspects of the STFM1000's innovative design.

"We have been extremely pleased with how easily the STFM1000 integrates with the STMP portable multimedia product family," said Mr. Liao Xiang Qiang, Deputy Director of Changhong. "We can offer a complete solution with enhanced radio functionality."

SPECIFICATIONS

The optimized radio architecture and the STFM1000 offer designers and manufacturers the following features:

--Optimum system partitioning to save cost when combined with the STMP3500 and STMP3600 families

--No need for a separate module solution

--One crystal for both STFM1000 and STMP3500/3600 to save cost and board space

--Supports US/Europe/Japan/Asia Bands in 100 KHz steps

--RF Automatic Gain Control (AGC)

--Automatic Internal Channel Selectivity

--Adjustment-free stereo decoder

--RDS support on STMP3600

--Inter-IC Communication Bus (I2C) support up to 400 kbps

--Stereo path processing

--Stereo Blend, Hi-Cut, and SoftMute

--Attack/decay times for signal quality indicators

--Search/Stop functions

--FM record on SoC

--Available in 5x5 QFN package

For more information on SigmaTel, please visit www.sigmatel.com.

About SigmaTel:

SigmaTel, Inc., a fabless semiconductor company headquartered in Austin, Texas, designs, develops, and markets proprietary, analog intensive, mixed-signal ICs for a variety of digital multimedia products in the consumer electronics and computing markets, including portable compressed audio players, such as MP3 players, notebook and desktop PCs, digital video cameras, multi-function peripheral products, digital televisions, and set-top boxes. SigmaTel provides complete, system-level solutions that include highly-integrated ICs, customizable firmware and software, software development tools, reference designs, and applications support. The Company's focus is on providing system-level solutions that enable customers to rapidly introduce and offer electronic products that are small, light-weight, power-efficient, reliable, and cost-effective. SigmaTel is ISO 9001:2000 certified and is committed to providing customers with high performance, quality products along with superior customer service.

Cautionary Language:

This press release contains forward-looking statements based on current SigmaTel expectations. The words "expect," "will," "should," "would," "anticipate," "project," "outlook," "believe," "intend," and similar phrases as they relate to SigmaTel or future events are intended to identify such forward-looking statements. These forward-looking statements reflect the current views and assumptions of SigmaTel, but are subject to various risks and uncertainties that could cause actual results to differ materially from expectations. A number of important factors could cause actual results to differ materially from those in the forward-looking statements, and there will be events in the future that SigmaTel is not able to accurately predict or control. For a discussion of factors that could impact SigmaTel's financial results and cause actual results to differ materially from those in the forward-looking statements, please refer to recent SigmaTel filings with the SEC, particularly the Form 10-K that was filed on February 24, 2006 and the form 10-Q filed on May 10, 2006.

SigmaTel is a registered trademark of SigmaTel, Inc. All other products and brand names as they appear in this release are trademarks or registered trademarks of their respective holders. All specifications may be changed without notice.