NM27P512 524�288-Bit (64K x 8) Processor Oriented CMOS EPROM is a 512K Processor Oriented EPROM that National company launched. it is configured as 64k x 8, designed for simplifying microprocessor interface, while still compatible with standard EPROM.
The NM27P512 EPROM provides 524 288 bits of non‑volatile storage in a 64 K × 8 configuration. Designed for microprocessor interfacing, it offers fast 120 ns access, extended data‑hold time and a JEDEC‑compatible pinout, eliminating the need for extra glue logic.
The device is available in three package styles—Quartz‑windowed DIP (Q), plastic OTP DIP (N) and PLCC (V)—and operates over a wide temperature range, from –65 °C to +150 °C. Programming requires a 12.75 V Vpp supply and a 6.25 V Vcc supply, with a fast 100 ps pulse algorithm for efficient data writing.
| Access Time | 120 ns |
|---|---|
| Programming Voltage (Vpp) | 12.75 V |
| Package Options | Q = Quartz‑windowed DIP, N = Plastic OTP DIP, V = PLCC |
| Storage Temperature Range | -65 °C to +150 °C |
| Operating Temperature (Commercial) | 60 °C to +70 °C |
The NM27P512 provides an access time of 120 ns.
Programming uses a Vpp of 12.75 V together with a Vcc of 6.25 V.
The device is offered in three packages: Q (Quartz‑windowed DIP), N (Plastic OTP DIP) and V (PLCC).
It operates from –65 °C up to +150 °C for storage, with commercial operation from 60 °C to +70 °C.