GR >> AT27C256R-55PC 
89356
AT27C256R-55PC
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 55NS 28DIP
Description original&Quality new original
554184
AT27C256R-55PC
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 55NS 28DIP
Description original&Quality new original