GR >> AT27C256R-90RC 
89370
AT27C256R-90RC
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 90NS 28SOIC
Description original&Quality new original
554210
AT27C256R-90RC
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 90NS 28SOIC
Description original&Quality new original