IC 80C51 MCU FLASH 64K 44-TQFP
8-bit 80C51 MCU, 40MHz, 64KB Flash, 1KB RAM, TQFP
80C51 MCU 40MHz 32KB FLASH 8b TQFP
8-bit 80C51 MCU, 40MHz, 16KB Flash, TQFP, 5V