Part Number : M27C512
Function : 512 Kbit (64K x8) UV EPROM and OTP EPROM
Package : DIP 28 Pin , PLCC 32 type
Maker : STMicroelectronics
Image : 
Description :
1. 5V ± 10% supply voltage in read operation
2. Access time: 45 ns
3. Low power “CMOS” consumption:
– Active current 30 mA
– Standby current 100 µA
4. Programming voltage: 12.75 V ± 0.25 V
5. Programming time around 6 s.
6. Electronic Signature
– Manufacturer code: 20h
– Device code: 3Dh
7. Packages
– ECOPACK versions
Datasheet PDF Download : 
Others datasheet of same file :
27C512, M27C512-10B1, M27C512-10B3, M27C512-10B6, M27C512-10C1