GR >> AT27C256R-90RI 
89371
AT27C256R-90RI
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 90NS 28SOIC
Description original&Quality new original
554211
AT27C256R-90RI
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 90NS 28SOIC
Description original&Quality new original