Summary of M27C512 512 Kbit (64K x8) UV EPROM and OTP EPROM
This handbook describes the M27C512 512 Kbit EPROM offered in UV and OTP versions. It covers the device architecture, pin functions, electrical characteristics, and the available package types (FDIP28W, PDIP28, PLCC32, TSOP28).
Detailed sections explain read and standby operation, programming voltage and timing, electronic signature, erasure methods for UV EPROMs, and recommended decoupling and bulk capacitor practices for system designers.
| Access time | 45 ns |
|---|---|
| Read supply voltage | 5 V ±10% |
| Active current | 30 mA |
| Standby current | 100 µA |
| Programming voltage | 12.75 V ±0.25 V |
| Typical programming time | ~6 seconds |
| Vcc (Voc) voltage | 6.25 V |
| UV erasure time (15 W‑sec/cm²) | 15–20 minutes |
The device requires a programming voltage of 12.75 V with a tolerance of ±0.25 V.
Erasing the UV EPROM with the specified UV intensity takes about 15 to 20 minutes.
The access time is specified as 45 ns.