GR >> AT27C512R-90TI 
89443
AT27C512R-90TI
Atmel
Quantity 20000
Packaging IC OTP 512KBIT 90NS 28TSOP
Description original&Quality new original
554309
AT27C512R-90TI
Microchip Technology
Quantity 9000
Packaging IC OTP 512KBIT 90NS 28TSOP
Description original&Quality new original