AT >> AT27C512R-70TU 
91499
AT27C512R-70TU
Atmel
Quantity 20000
Packaging IC OTP 512KBIT 70NS 32PLCC
Description original&Quality new original
554300
AT27C512R-70TU
Microchip Technology
Quantity 9000
Packaging IC OTP 512KBIT 70NS 32PLCC
Description original&Quality new original