27C256I12N Datasheet and 27C256I12N manual

Manufacturer : Philips 

Packing : PDIL 

Pins : 28 

Temperature : Min -40 °C | Max 85 °C

Size : 609 KB

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

27C256I12N PDF Download