P80C51
80C51 8-bit microcontroller (NXP)
P80C51BH
(P80C31BH / P80C51BH) CHMOS Single-Chip 8-Bit Microcontroller (Intel)
P80C51X2
80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V/ low power/ high speed 30/33 MHz (NXP)
P80C521
(P80Cxx1) CMOS SINGLE CHIP MICROCONTROLLER (AMD)
P80C528
8-bit microcontrollers (NXP)
P80C52X2
80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V/ low power/ high speed 30/33 MHz (NXP)
P80C541
(P80Cxx1) CMOS SINGLE CHIP MICROCONTROLLER (AMD)
P80C54X2
80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V/ low power/ high speed 30/33 MHz (NXP)
P80C552
Single-chip 8-bit microcontroller (NXP)
P80C557E4
Single-chip 8-bit microcontroller (NXP)