GR >> AT27C256R-90PI 
89369
AT27C256R-90PI
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 90NS 28DIP
Description original&Quality new original
554209
AT27C256R-90PI
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 90NS 28DIP
Description original&Quality new original