GR >> AT27C256R-12RC 
89334
AT27C256R-12RC
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 120NS 28SOIC
Description original&Quality new original
554157
AT27C256R-12RC
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 120NS 28SOIC
Description original&Quality new original