GR >> AT27LV520-90SC 
89552
AT27LV520-90SC
Atmel
Quantity 20000
Packaging IC OTP 512KBIT 90NS 20SOIC
Description original&Quality new original
554461
AT27LV520-90SC
Microchip Technology
Quantity 9000
Packaging IC OTP 512KBIT 90NS 20SOIC
Description original&Quality new original