a clock with multiple functions

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

uCLinux实验指导书-Guide to the experiments of uClinux

伟福仿真器软件使用- Great lucky simulator software uses

实用遥控器编码程序1-Useful encode program 1 of remote controller

CSP封装技术,最新IC封装技术.--CSP packaging technique, the latest IC packaging technique.

开发SD卡的必备资料,希望大家喜欢--Useful materials for developing SD card.

用verilog写的对OCMJ2X8液晶模块控制代码，显示汉字和数字-Written using Verilog OCMJ2X8 LCD module on the control code indicating the number of Chinese characters and

ucfs2004

本程序为PIC单片机编写，用于基于gps和gsm的车辆跟踪系统

欧姆龙PLC通讯程序源码.非常实用的通讯程序.-Omron PLC communication program source code. Very practical communication procedures.