GR >> AT27C256R-15RC 
89342
AT27C256R-15RC
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 150NS 28SOIC
Description original&Quality new original
554166
AT27C256R-15RC
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 150NS 28SOIC
Description original&Quality new original