时钟芯片PCF8591 C语言程序

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

msp 430 精典学习代码-msp 430 classic learning code

c++一百例，内有大量编程实例，仅供参考。 -c++ 100 cases, which have a large number of programming examples for reference only.

STM32F4xx ADC 多通道扫描选用了三个通道AD10，AD11，AD13，根据STM32F407 discovery的官方例程ADC3_DMA修改的，可以同时采集三个通道的数据，并用DMA方式传送到存储器中。

S3C2440处理器上的CF卡读写程序，已经通过验证。-S3C2440 processor CF card reader procedure has been validated.

串行口输入，只使用三根线，对于学习TLC0831的同学会有点帮助。-Serial port input, using only three lines, for the students to learn TLC0831 will to some extent.

从大量的wince源代码中剥离出的fat文件系统源代码.移植性非常高. 里面带有source i.rar-Wince from a large number of source code stripped out of the fat file system source code. Portability is very high. Inside with a source i.rar

msp430的程序，具体型号是f5438，12864为st920的主控芯片-msp430 procedures, the specific model is f5438, 12864 for the master chip st920

详细介绍了80*86的工作机制，是一本很好的电子类书籍-Described in detail 80* 86 working mechanism is a very good e-books

Ｃ８０５１Ｆ０４０内部温度传感器测温程序，数据采集精度比较高．-C8051F040 internal temperature sensor temperature measurement, data acquisition relatively high accuracy.