AT89C4051-12PA Similar

AT89C4051-12PA Datasheet and AT89C4051-12PA manual

Manufacturer : Atmel 

Packing : plastic PDIP 

Pins : 20 

Temperature : Min -40 °C | Max 105 °C

Size : 291 KB

Application : 8-bit microcontroller with 4K bytes flash, 3.0V to 6.0V 

AT89C4051-12PA PDF Download