80C537
8-Bit CMOS Single-Chip Microcontroller (Siemens Semiconductor Group)
80C51
8-bit microcontrolle (NXP)
80C517A
SAB80C517A (Siemens Semiconductor)
80C51BH
CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER (Intel Corporation)
80C51FA
EVENT-CONTROL CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER (Intel Corporation)
80C51FA
8-bit microcontroller (NXP)
80C51GB
CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER (Intel Corporation)
80C51RA
8-bit microcontroller (NXP)
80C51SL
KEYBOARD CONTROLLER (Intel)
80C51X2
80C51 8-bit microcontroller (NXP)