AT >> AT27C512R-45TU 
91314
AT27C512R-45TU
Atmel
Quantity 20000
Packaging IC OTP 512KBIT 45NS 28TSOP
Description original&Quality new original
554279
AT27C512R-45TU
Microchip Technology
Quantity 9000
Packaging IC OTP 512KBIT 45NS 28TSOP
Description original&Quality new original