80C51 8-bit microcontroller family 16kB OTP/ROM, 256B RAM, low voltage (2.7 to 5.5 V), low power, high speed (30/33 MHz)
P83C654X2/P87C654X2 80C51 8-bit microcontroller family 16 kB OTP/ROM, 256B RAM, low voltage (2.7 to 5.5 V), low power, high speed (30/33 MHz) P83C654X2/P87C654X2 80C51 8-bit