AT89C1051U-24SI Similar

AT89C1051U-24SI Datasheet and AT89C1051U-24SI manual

Manufacturer : Atmel 

Packing : plastic SOIC 

Pins : 20 

Temperature : Min -40 °C | Max 85 °C

Size : 221 KB

Application : 8-bit microcontroller with 1K bytes flash, 4.0V to 6.0V power supply 

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