8-bit 8051 MCU, 33MHz, 32KB ROM, 5V, QFP
8-Bit MCU, 16MHz, 44-Pin QFP, 2.7-5.5V
32KB 8051 Microcontroller, 8b Data Bus, 16MHz, PQFP, 0-70°C, 2.7-5.5V