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AT25M01-SSHM-T

MCHPAT25M01-SSHM-T

Microchip Technology
EEPROM Memory IC 1Mbit SPI 20 MHz 8-SOIC
Active6,494 in stock
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Overview

The AT25M01-SSHM-T is a high-density 1Mbit Serial SPI EEPROM organized as 128K x 8 bits. It operates over a wide voltage range of 1.7V to 5.5V, making it compatible with low-voltage microcontrollers and standard 5V systems. Designed for high-reliability applications, it features a 20 MHz clock rate and robust data protection mechanisms.

Why Choose This Part

This device offers a high-speed 20 MHz SPI interface for rapid data transfer and a large 256-byte page write buffer to optimize throughput. It features extremely low power consumption with a standby current of only 0.2 uA, and includes hardware/software write protection for secure data integrity.

Applications

Firmware Configuration Storage
Storing complex system parameters and lookup tables that require frequent byte-level updates without erasing large blocks.
Data Logging
Recording sensor data and system events in industrial environments where non-volatile storage is required during power cycles.
Calibration Mapping
Retaining precision calibration data for analog-to-digital converters and industrial instrumentation.

Key Specifications

Technology EEPROM
Memory Size 1Mbit
Memory Type Non-Volatile
Memory Format EEPROM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 20 MHz
Memory Interface SPI
Voltage - Supply 1.7V ~ 5.5V
Memory Organization 128K x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOIC
Write Cycle Time - Word, Page 5ms

Getting Started

Interface the AT25M01 with any MCU supporting SPI Mode 0 or 3. Ensure the WP (Write Protect) pin is tied high if hardware protection is not needed, and use the 256-byte page mode to minimize the 5ms write cycle overhead. Logic level shifters are generally unnecessary due to the 1.7V to 5.5V operating range.

Also Consider

M95M01-R STMicroelectronics - Offers 1Mbit density with a 16 MHz clock speed and a wide 1.8V to 5.5V supply range.
CAT25M01 ONonsemi - A 1Mbit SPI alternative featuring high endurance and compatibility with the standard 8-pin SOIC footprint.