Philips Electronics

80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless low voltage (2.7V–5.5V), low power, high speed (33 MHz)

Philips Electronics

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)

Intel

MCS® 51 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

NXP Semiconductors.

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)

Philips Electronics

80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless low voltage (2.7V–5.5V), low power, high speed (33 MHz)

Philips Electronics

80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless low voltage (2.7V–5.5V), low power, high speed (33 MHz)

NXP Semiconductors.

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)

Philips Electronics

80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless low voltage (2.7V–5.5V), low power, high speed (33 MHz)

Intel

CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER