AT >> AT28HC256F-90PU 
91329
AT28HC256F-90PU
Atmel
Quantity 20000
Packaging IC EEPROM 256KBIT 90NS 28DIP
Description original&Quality new original
554978
AT28HC256F-90PU
Microchip Technology
Quantity 9000
Packaging IC EEPROM 256KBIT 90NS 28DIP
Description original&Quality new original