Packaged in a PLCC format, this MCU is available in a compact size. There are 32 I/Os on the Microcontroller. The chip has 44 pins. The clock has 3 timers/counters to keep track of the time.
P80C31SFAA Features
PLCC package
P80C31SFAA Applications
There are a lot of Rochester Electronics P80C31SFAA Microcontroller applications.