MCHPAT25256B-SSHL-T
Overview
The AT25256B-SSHL-T is a 256Kbit industrial-grade serial EEPROM utilizing the SPI bus for high-speed data transfer up to 20 MHz. It is organized as 32K x 8 bits and operates across a wide voltage range of 1.8V to 5.5V, making it suitable for low-power and standard voltage embedded systems. This non-volatile memory is designed for applications requiring frequent data updates and reliable storage in a compact 8-SOIC package.
Why Choose This Part
The device features a 64-byte page mode and a fast self-timed write cycle of maximum 5 ms. It offers robust data protection via a dedicated Write-Protect (WP) pin and software-based block write protection. With a low standby current of only 5 uA and ESD protection exceeding 4,000V, it provides high reliability for power-sensitive and harsh industrial designs.
Applications
Key Specifications
Getting Started
Interface the AT25256B with any SPI-capable microcontroller using Standard SPI Mode 0 or Mode 3. Engineers can use standard logic analyzers to verify the SPI timing and instruction set, which includes standard opcodes for Read, Write, and Status Register access. Ensure the WP and HOLD pins are tied high if their hardware features are not actively utilized in the circuit design.
