AT >> AT27C512R-45RU 
91338
AT27C512R-45RU
Atmel
Quantity 20000
Packaging IC OTP 512KBIT 45NS 28SOIC
Description original&Quality new original
554276
AT27C512R-45RU
Microchip Technology
Quantity 9000
Packaging IC OTP 512KBIT 45NS 28SOIC
Description original&Quality new original