S87C552 Datasheet | Philips Semiconductors

DESCRIPTION The 87C552 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 87C552 has the same instruction set as the 80C51. Three versions of the derivative exist: - 83C552- 8k bytes mask programmable - 80C552- ROMless version of the 83C552 - 87C552- 8k bytes EPROM The 87C552 contains a 8k × 8 a volatile 256 × 8 read/write data memory, five 8-bit I/O ports, one 8-bit input port, two 16-bit timer/event counters (identical to the timers of the 80C51), an additional 16-bit timer coupled to capture and pare latches, a 15-source, two-priority-level, nested...