应用功能： 8位微控制器 The AT89C55WD is a low-power, high-performance CMOS 8-bit microcomputer with 20K bytes of Flash programmable read only memory and 256 bytes of RAM. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry standard 80C51 and 80C52 instruction set andpinout.
