GR >> AT27C256R-90PC 
89368
AT27C256R-90PC
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 90NS 28DIP
Description original&Quality new original
554208
AT27C256R-90PC
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 90NS 28DIP
Description original&Quality new original