M27C64A is a 64Kbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for micro-processor systems requiring large programs and is organized as 8,192 by 8 bits. It has an access time of 100ns, low power CMOS consumption, programming voltage of 12.5V, high speed programming, etc.
The M27C64A EPROM is offered in two ranges: UV (ultraviolet erase) and OTP (one‑time programmable). It provides 64 Kbit organized as 8,192 × 8 bits and is supplied in FDIP28W (window ceramic) and PLCC32 packages. The device features low‑power CMOS consumption, a standby mode that reduces active current to 100 µA, and a two‑line output control for efficient memory array use.
The datasheet includes absolute maximum ratings, DC and AC electrical characteristics, timing parameters for read, program, verify and standby modes, as well as package mechanical dimensions. Programming requires a 12.5 V + 0.25 V VPP supply, and the device supports high‑speed programming in less than one minute. Detailed pin‑out tables and signal definitions are provided for system integration.
| Supply Voltage (Vcc) | 5 V + 10 % |
|---|---|
| Programming Voltage (VPP) | 12.5 V + 0.25 V |
| Access Time | 100 ns |
| Active Current | 30 mA |
| Standby Current | 100 µA |
| Input Low Voltage (VIL) | -0.3 V to 0.8 V |
| Output Low Voltage (VOL) | 0.4 V |
| Output High Voltage (VOH) – TTL | 2.4 V |
| Ambient Operating Temperature | -40 °C to 125 °C |
| Storage Temperature | -65 °C to 150 °C |
| Input Capacitance (CIN) | 6 pF (typ) |
| Output Capacitance (COUT) | 12 pF (typ) |
The device requires a programming voltage of 12.5 V + 0.25 V (VPP).
In standby mode the M27C64A draws 100 µA.
The access time is specified as 100 ns.