NMC27C64Q150 NMOS 64K (8K x 8) 150ns UV EPROM IC DIP-28

NMC27C64Q150 NMOS 64K (8K x 8) 150ns UV EPROM IC DIP-28

The NMC27C64Q150 is a 64K-bit (8K × 8) UV-erasable EPROM implemented in NMOS technology and supplied in a 28-pin DIP package. Designed as a non-volatile program/data store for legacy and embedded systems, this device provides straightforward maskless reprogramming via ultraviolet exposure and is optimized for systems that require simple, low-cost firmware storage with 150 ns access timing.

Internally organized as 8,192 bytes in an 8-bit-wide memory array, the NMC27C64Q150 offers parallel data access with standard asynchronous bus timing suitable for microprocessors and microcontrollers of the TTL/CMOS era. The part is unglamorously robust: a classic EPROM offering predictable read behaviour, easy in-circuit replacement, and long data retention when properly handled and stored.

Mechanically the device is commonly supplied in the through-hole DIP-28 package for easy prototyping and board-level replacement. Programming is performed externally (VPP programming) and erased by exposing the quartz window (if fitted) to UV light a familiar workflow for vintage/maintenance environments and low-volume production where programmability without mask changes is desirable.

Features:

• 64 Kbit memory arranged as 8K × 8.
• 150 ns access time.
• NMOS process technology.
• UV-erasable, electrically programmable EPROM.
• Standard 28-pin DIP package for easy socketing and replacement.
• Parallel 8-bit data bus with asynchronous timing compatible with legacy microprocessors.

Specifications:

Pinout & Connection Diagram:

Applications:

• Legacy Computer BIOS Storage.
• Retro Gaming Console Cartridges.
• Industrial Machine Firmware.
• Vintage Automotive ECU Programs.
• Early Telecommunications Equipment.
• Microcontroller Program Storage (External).
• Educational/Development Systems.
• Firmware for Obsolete Test Equipment.
• Peripheral Device Control ROM.
• Archival Data Storage.

Package Contents:

• 1x NMC27C64Q150 NMOS 64K (8K x 8) 150ns UV EPROM IC DIP-28

Datasheet