P83C654
DESCRIPTION
The P83C654 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 83C654 has the same instruction set as the 80C51. Two versions of the derivative exist:
83C654
- 16k bytes mask programmable ROM
87C654
- EPROM version (described in a separate data sheet)
This device provides architectural enhancements that make it applicable in a variety of applications for general control systems. The 83C654 contains a non-volatile 16k × 8 read-only program memory, a volatile 256 × 8 read/write data memory, four 8-bit I/O ports, two 16-bit timer/event counters (identical to the timers of the 80C51), a multi-source, two-priority-level,...
