c8051f系列单片机的SPI

并行/串行通信源程序

Cygnal出的一种混合信号系统级单片机。片内含CIP－51的CPU内核，它的指令系统与MCS－51完全兼容。其中的C8051F020单片机含有64kB片内Flash程序存储器，4352B的RAM、8个I／O端口共64根I／O口线、一个12位A／D转换器和一个8位A／D转换器以及一个双12位D／A转换器、2个比较器、5个16位通用定时器、5个捕捉／比较模块的可编程计数／定时器阵列、看门狗定时器、VDD监视器和温度传感器等部分。C8051F020单片机支持双时钟，其工作电压范围为2．7～3．6V（端口I/O,RST和JTAG引脚的耐压为5V）。与以前的51系列单片机相比，C8051F020增添了许多功能，同时其可靠性和速度也有了很大提高。 -c8051f Series MCU SPI

Parallel/Serial Communication source

Cygnal out a single-chip mixed-signal system-level. Tablets containing the CIP-51 core CPU, and its command system and the MCS-51 is fully compatible. Containing one of the C8051F020 single-chip 64kB chip Flash program memory, 4352B of RAM, 8个I/O ports a total of 64 I/O port line, a 12-bit A/D converter and an 8-bit A/D converter as well as a dual 12-bit D/A converter, 2 comparators, five 16-bit general purpose timers, 5 capture/compare module programmable counter/timer arrays, Watchdog Timer, VDD Monitor and temperature sensors and other parts. C8051F020 single-chip dual clock, its operating voltage range of 2.7 ~ 3.6V (Port I/O, RST, and JTAG pins of the voltage to 5V). With the previous 51 series single-chip comparison, C8051F020 added a lot of functionality, reliability and speed at the same time also has been greatly improved.