8-Bit 16MHz MCU, 80C51 Core, 128B RAM, PLCC
8-Bit Microcontroller, 128B RAM, 16MHz, 44-Pin Quad Package
8-bit MCU 80C51 ROMless 16MHz 3.3V/5V 44-Pin LCC
Microcontroller 8-Bit 16MHz 5V 2.7V 5.5V 50mA Quad Package
P80C31SBAA.512
