E0C6274 CMOS 4-Bit Single Chip Microcomputer Composed of Core CPU E0C6200A,Dual Slope Type A/D Converter,Reference Voltage Generation Circuit,General Purpose Operating Amplifier,SVD Circuit(4位CMOS单片微型计算机(含E0C6200A中央处理器核芯,双斜率型A/D转换器,参考电压发生电路,通用运算放大器,SVD电路))