AT89C1051U-12PA Similar

AT89C1051U-12PA Datasheet and AT89C1051U-12PA manual

Manufacturer : Atmel 

Packing : plastic PDIP 

Pins : 20 

Temperature : Min -40 °C | Max 105 °C

Size : 221 KB

Application : 8-bit microcontroller with 1K bytes flash, 2.7V to 6.0V power supply 

AT89C1051U-12PA PDF Download