8-bit MCU 33MHz 32KB ROM 5V 32 I/O PLCC
P80C32UBAA.512
P80C32SBAA.512
8-bit 8051 MCU, 16MHz, 32KB ROMless, 32 I/O, UART, 3.3V/5V, LCC
8-bit MCU 80C51 33MHz 32KB ROM 5V 44-Pin PLCC
IC 80C51 MCU 8BIT ROMLESS 44PLCC