The FM27C512 is a 512K UV Erasable Electri- cally Programmable Read Only Memory (EPROM) manufactured by Fairchild with high performance, 90 ns access time, Fast turn-off for microprocessor compatibility, Manufacturers identification code, JEDEC standard pin configuration.
The FM27C512 is a high‑performance 524,288‑bit (64K × 8) UV‑erasable CMOS EPROM designed for microprocessor‑based systems. It provides fast 90 ns access time and is available in several JEDEC‑standard packages, including 28‑pin PDIP, 32‑pin chip carrier, 28‑pin CERDIP and PLCC.
Key specifications include a commercial temperature range of 0 °C to +70 °C (industrial –40 °C to +85 °C), a typical supply voltage of 5 V for read mode and 6.5 V for programming, Vpp programming voltage of 12.5 V–13 V, standby current as low as 100 pA, and a maximum operating voltage of 14 V on the OE/Vpp pin. Detailed programming characteristics, electrical parameters, and physical dimensions are provided for system designers.
| Memory size | 524,288 bit (64 K × 8) |
|---|---|
| Access time | 90 ns |
| Supply voltage (Voc) for programming | 6.5 V (typical) |
| Programming voltage (Vpp) | 12.5 V – 13 V |
| Standby current | 100 pA |
| Package options | 28‑pin PDIP, 32‑pin chip carrier, 28‑pin CERDIP, PLCC |
The FM27C512 has a 90 ns access time.
Programming requires a Vpp voltage between 12.5 V and 13 V.
The device is offered in 28‑pin PDIP, 32‑pin chip carrier, 28‑pin CERDIP, and PLCC packages.