The PCF7991AT is a fully integrated Advanced Basestation IC, ABIC, designed for car immobilizer systems providing read and write access to an identification transponder. The device is intended for use with the NXP transponder family (PCF79xx) as well as other transponder types operating at 125 kHz and employing ASK, Amplitude Shift Keying for write and AM/PM for the read operation. The receiver characteristics (amplifier gain,filter cutoff frequencies) can be optimized to system and transponder requirements. The PCF7991AT IC is designed for easy integration into immobilizer read/write and read-only systems featuring a high degree of integration and very low external component count. The device integrates a powerful antenna driver/modulator, a low-noise adaptive sampling time demodulator, programmable filters/amplifier and digitizer, required to design high-performance basestations. A three wire microcontroller interface is provided for programming the PCF7991AT as well as for th

对于MAC WANG写的4510的驱动的修改,在uClinux环境下.转载-MAC WANG write for the driver of the 4510 amendments to the uClinux environment. Reprinted

fat文件系统的工作原理相关内容,是学习fat文件系统的必备资料--An introduction of FAT file system. It is a good reference for learning FAT file system.

一个简单的TCP IP协议栈程序，可以移植到大家的硬件上面--A simple TCP/IP protocol stack. It could be migrated to your hardware.

LPC2106开发板(原理图)-LPC2106 development board (diagram)

ATMEL XMEGA crypto program-task4.

该讲义首先介绍了版本控制的基本概念，然后讲解了svn的基本知识、体系架构，工作中常用的命令，然后介绍了常用的gui客户端，和eclipse 插件。 最后介绍了经常遇到的问题，和使用svn的一些约定。 -The notes first introduced the basic concepts of version control, and then explain the basic knowledge of the svn, system architecture, commonly used in the work order, and then introduced the commonly used client gui and eclipse plug-ins. Finally, the problem often encountered, and the use of svn some agreement.

CANBUS avr driver library

基本程序，说明如何使端口引脚作为输入，并通过它连接交换机。。连接一个LED，七段；使用中断。LCD接口。

Universal Bootloader which support OMAP2420.