GR >> AT27C256R-12PC 
89332
AT27C256R-12PC
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 120NS 28DIP
Description original&Quality new original
554155
AT27C256R-12PC
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 120NS 28DIP
Description original&Quality new original