X28HC256K-90 Datasheet and X28HC256K-90 manual

Manufacturer : Xicor 

Packing : PGA28 

Pins : 28 

Temperature : Min 0 °C | Max 70 °C

Size : 120 KB

Application : 256K (32K x 8bit) 5 volt, byte alterable E2PROM 

X28HC256K-90 PDF Download