TMP47C870 High Speed And High Performance 4-bit Single Chip Microcontroller,Integrating ROM、RAM,8-Bit A/D Converter,12-Bit Programmable Pulse Generator and High-Breakdown Voltage Output(高速、高性能的4位单片微控制器(芯片集成了8192 x 8位ROM,512 x 4位RAM,8位A/D转换器,12位可编程脉冲发生器,高击穿电压输出))