GR >> AT27C512R-15RC 
89412
AT27C512R-15RC
Atmel
Quantity 20000
Packaging IC OTP 512KBIT 150NS 28SOIC
Description original&Quality new original
554263
AT27C512R-15RC
Microchip Technology
Quantity 9000
Packaging IC OTP 512KBIT 150NS 28SOIC
Description original&Quality new original