AT >> AT27C512R-70RU 
91348
AT27C512R-70RU
Atmel
Quantity 20000
Packaging IC OTP 512KBIT 70NS 28SOIC
Description original&Quality new original
554298
AT27C512R-70RU
Microchip Technology
Quantity 9000
Packaging IC OTP 512KBIT 70NS 28SOIC
Description original&Quality new original