先给个网址 http://www.dotnetcpu.com 
真是太感慨 .net 的进展步伐了，嵌入式系统，印象里面好像 C/C++ 一统天下，这回到好，C# 都能往上用了。 
 
The .netcpu™ CPU Module is a device that houses the microprocessor that drives the .netcpu development kits. The CPU Module functions in the same manner as other general purpose software–hardware development platforms, but it contains a richer feature set and greater flexibility. The processor provides users with a platform on which to develop applications using Microsoft® .Net™ technology.

The module can be inserted into the .netcpu™ Carrier Board or the .netcpu™ Educational Board. Alternately, it can be implemented into custom circuits and applications.

The .netcpu™ CPU Module is highly optimized for small devices. It features:

• 384K of SRAM, single cycle access
• 27 MHz ARM7TDMI
• FBGA chip form
• ~450,000 instructions per second
• 4MB non volatile flash
• 1.8-volt core, 3.3-volt I/O
• 32768 Hz real-time clock
• 32-pin pinout, including 24 GPIO ports multiplexed with other functions (8 VTU ports, dual serial ports, SPI, and USB port)
• SPI and I2C interfaces

The .netcpu™ CPU Module is not only fast but it also features low power requirements. Such low power usage is perfect for use in handheld, battery-powered products, including cell phones, PDAs, and portable music players.

The Microsoft® .Net Embedded™ SDK, included with the CPU Module, includes a rich driver set with easy-to-use object models and helpful sample applications. The developer can write drivers in the C# programming language.

Additional capabilities include buffered serial communication in the background, up to seven UART objects that can communicate independently of one another and the main program, and pulse width modulation (PWM) in the background.

The .netcpu CPU Module is the most sophisticated microcontroller on the market.

The .netcpu CPU Module includes:

• Microsoft® .Net Embedded™ SDK
• Microsoft® Visual Studio® 2005 Beta 1 Installer CD
• User documentation

The .netcpu CPU Module does not include a development board, a power regulator, or a serial interface. Instructions for building a power regulator and serial circuit are included. However, the parts required are not included. For a full development kit, check out the .netcpu development kits.