Silicon Laboratories Expands Industry-Leading Small Form Factor Microcontroller Product Family.

AUSTIN, Texas -- Silicon Laboratories Inc. (Nasdaq:SLAB) today announced the expansion of its small form factor family of mixed-signal microcontrollers (MCUs) with the addition of four new small memory option devices, the C8051F332 product family, that are pin-for-pin compatible with Silicon Laboratories' popular small form factor product family. Silicon Laboratories offers the industry's leading portfolio of small form factor, high-performance mixed-signal MCUs; these mixed-signal devices deliver more functionality in a small package than any other MCU on the market.

Based on Silicon Laboratories' high-speed pipelined 8051 core, the C8051F332 product family features 25 MIPS, 2 to 8 kB Flash and 768 B RAM in a tiny 4 x 4 mm package. These highly-integrated devices eliminate external components such as crystal oscillators making them ideal for space-constrained, low-power consumer, industrial and communications applications.

The C8051F332 product family integrates on-chip peripherals such as a 10-bit 200 ksps ADC, temperature sensor, voltage reference and comparator. The C8051F332 product family also incorporates a two percent accurate precision internal oscillator eliminating the need for an external crystal or resonator. On-board serial communication peripherals include UART, SMBus(TM) and SPI(TM) bus serial ports.

"Silicon Laboratories mixed-signal MCU portfolio uniquely addresses the broad range of applications where space constraints traditionally have resulted in performance trade-offs. Our new small form factor devices, like the rest of our small form factor portfolio, offer a very small footprint without sacrificing performance," said Derrell Coker, vice president of Silicon Laboratories.

The C8051F332 includes on-chip 2-wire (C2) debug circuitry that provides non-intrusive, full-speed, in-circuit debugging of the production part before and after installation with no emulator required. Like all Silicon Laboratories MCU products, the C8051F332 products are supported with a complete, low-cost professional development kit that includes everything required to immediately begin the system design: IDE, target board, cables and power supply.

Pricing and Availability

The C8051F332 is packaged in a 20-pin QFN. Pricing begins at $1.38 in quantities of 10,000 and a complete development kit is available for $99. To buy online please visit www.silabs.com/MCUselector.

Silicon Laboratories Inc.

Silicon Laboratories Inc. is a leading designer of high-performance, analog-intensive, mixed-signal integrated circuits (ICs) for a broad range of applications. Silicon Laboratories' diverse portfolio of highly-integrated, patented solutions is developed by a world-class engineering team with decades of cumulative expertise in cutting-edge mixed-signal design. The company has design, engineering, marketing, sales and applications offices throughout North America, Europe and Asia. For more information about Silicon Laboratories please visit www.silabs.com.

Cautionary Language

This press release may contain forward-looking statements based on Silicon Laboratories' current expectations. These forward-looking statements involve risks and uncertainties. A number of important factors could cause actual results to differ materially from those in the forward-looking statements. Silicon Laboratories believes that it is important to communicate the company's future expectations to investors. However, there may be events in the future that Silicon Laboratories is not able to accurately predict or control. For a discussion of these and other factors that could impact Silicon Laboratories' financial results and cause actual results to differ materially from those in the forward-looking statements, please refer to Silicon Laboratories' recent filings with the SEC, particularly the Form 10-Q filed July 22, 2005.

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