The NM27C128QE120 is a 128K (16K x 8) UV Erasable PROM (EPROM) manufactured by ON Semiconductor (formerly Fairchild). It is a non-volatile memory device that can be electrically erased and reprogrammed, making it suitable for applications where firmware updates or configuration changes are required.

Applications

• Embedded systems: Storing firmware for microcontrollers and other embedded processors.
• Industrial control systems: Storing configuration data and control algorithms for industrial equipment.
• Telecommunications equipment: Storing boot code and configuration parameters for networking devices.
• Instrumentation: Storing calibration data and measurement algorithms for test and measurement equipment.
• Aerospace and defense applications: Applications requiring non-volatile memory and tolerance to extreme environmental conditions.

Features

• 128K (16K x 8) memory organization: Provides 128 kilobits of storage capacity, organized as 16,384 bytes.
• UV erasable: Can be erased using ultraviolet light, allowing for reprogramming.
• Fast access time: Offers a typical access time of 120 ns, enabling high-speed data retrieval.
• Low power consumption: Consumes minimal power during operation, making it suitable for battery-powered applications.
• TTL compatible inputs and outputs: Interfaces directly with TTL logic circuits.

Benefits

• Reprogrammability: Allows for firmware updates and configuration changes without replacing the memory device.
• Fast access time: Enables quick data retrieval, improving system performance.
• Low power consumption: Extends battery life in portable applications.
• Wide operating voltage range: Provides flexibility in system design.
• TTL compatibility: Simplifies interfacing with other logic circuits.

Additional Details

The NM27C128QE120 operates from a single 5V power supply. It is available in a 28-pin DIP package. The operating temperature range is typically 0°C to +70°C. Erasing is accomplished by exposing the chip to ultraviolet light with a wavelength of 2537 Angstroms through the transparent window on the package. The recommended integrated dose is 15 Wsec/cm². The device also includes features like Output Enable (OE) and Chip Enable (CE) to facilitate easy memory expansion and control.