GR >> AT27C256R-55PI 
89357
AT27C256R-55PI
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 55NS 28DIP
Description original&Quality new original
554185
AT27C256R-55PI
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 55NS 28DIP
Description original&Quality new original