STMicroelectronics M27256-2FI EPROM

The M27256-2FI is a high-speed 256 Kbit EPROM (Erasable Programmable Read-Only Memory) produced by STMicroelectronics. This reliable memory component is designed to store data that must not be changed accidentally, making it ideal for use in a wide range of applications, including computer BIOS, gaming, and other embedded systems where program code needs to be stored permanently.

With its 32 K x 8-bit organization, the M27256-2FI offers a substantial amount of data storage capacity. The device can be electrically erased and reprogrammed, which allows for flexibility and reusability during the development phase or when updating firmware in the field. This EPROM operates with a single 5V power supply, which is standard for many digital systems, ensuring compatibility and ease of integration.

Key features of the M27256-2FI include:

• Access Time: The device provides fast access times, which is essential for high-speed microprocessor systems.
• Programming Voltage: It supports a 12.5V programming voltage, which is a typical requirement for programming EPROM devices.
• Package: The M27256-2FI is available in a 28-pin CERDIP (Ceramic Dual In-line Package), which offers robust physical protection and reliability for the internal silicon chip.
• Temperature Range: It operates within an extended temperature range, making it suitable for industrial applications with harsh environmental conditions.
• Standby Mode: The low-power standby mode helps to reduce power consumption when the device is not actively being accessed.

For programming, the M27256-2FI supports a two-line control function that allows for easy integration into the memory subsystem. The EPROM's transparent lid allows users to expose the chip to ultraviolet light to erase the stored data, providing a way to reprogram the memory as needed.

In summary, the M27256-2FI from STMicroelectronics is a versatile and durable EPROM that provides reliable storage for applications requiring long-term data retention without power. Its fast access time, reprogrammability, and compatibility with standard system voltages make it a popular choice among engineers and developers in various fields.