GR >> AT27C512R-15PC 
89410
AT27C512R-15PC
Atmel
Quantity 20000
Packaging IC OTP 512KBIT 150NS 28DIP
Description original&Quality new original
554260
AT27C512R-15PC
Microchip Technology
Quantity 9000
Packaging IC OTP 512KBIT 150NS 28DIP
Description original&Quality new original