DESCRIPTION
The 87C652/87C654 single-chip 8-Bit microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 87C652/87C654 has the same instruction set as the 80C51. Three versions of the derivative exist: 80C652—ROMless 83C652/83C654—8 Kbyte, 16 Kbyte ROM 87C652/87C654—8 Kbyte, 16 Kbyte OTP The ROMless and ROM are in separate datasheets. This device provides architectural enhancements that make it applicable in a variety of applications for general control systems. Both have a volatile 256 × 8