27C256-20N Datasheet and 27C256-20N manual

Manufacturer : Philips 

Packing : PDIL 

Pins : 28 

Temperature : Min 0 °C | Max 70 °C

Size : 609 KB

Application : 2-7 V, 256K-bit CMOS EPROM (32Kx8) 

27C256-20N PDF Download