STMicroelectronics M27C256B90B6L EPROM Overview

The M27C256B90B6L is a high-speed 256 Kbit EPROM (Erasable Programmable Read-Only Memory) from the renowned semiconductor manufacturer STMicroelectronics. This memory device provides a robust storage solution for applications requiring data retention without power, as well as the flexibility to update the stored content as needed through a programming process.

Key Features

• Memory Capacity: The device boasts a capacity of 256 Kbits, organized as 32,768 words by 8 bits, suitable for storing firmware, boot code, or other critical data.
• Access Time: It offers a fast access time of 90 ns, ensuring quick data retrieval for high-performance systems.
• Programming Voltage: The M27C256B90B6L requires a single 5V power supply for read operations, while programming is facilitated through a 12.5V programming voltage.
• Package: Encased in a 28-lead CERDIP (Ceramic Dual In-line Package), the device provides excellent environmental and mechanical protection for the silicon die within.
• Temperature Range: The operational temperature range of the device extends from 0°C to 70°C, making it suitable for commercial-grade applications.
• Standby Mode: A low power standby mode reduces power consumption when the device is not in active use.

Applications

The M27C256B90B6L is designed for a wide array of applications across various industries. It is particularly well-suited for use in:

• Embedded systems requiring a reliable boot memory
• Telecommunication equipment
• Automotive electronics
• Industrial control systems
• Medical devices

Programming and Erasure

As an EPROM, the M27C256B90B6L can be electrically programmed and erased. Erasure is achieved by exposing the chip to ultraviolet (UV) light through its transparent window, which allows for the reset of the memory content to its original state. This feature provides designers and engineers with the flexibility to update firmware or make changes to the stored data throughout the life cycle of their products.

The M27C256B90B6L from STMicroelectronics represents a reliable and versatile memory solution, with a combination of speed, capacity, and flexibility that makes it an essential component in a multitude of technological applications.