GR >> AT27C256R-55RC 
89358
AT27C256R-55RC
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 55NS 28SOIC
Description original&Quality new original
554186
AT27C256R-55RC
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 55NS 28SOIC
Description original&Quality new original