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AT25040B-SSHL-T

MCHPAT25040B-SSHL-T

Microchip Technology
EEPROM Memory IC 4Kbit SPI 20 MHz 8-SOIC
NRND9,427 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The AT25040B-SSHL-T is a 4Kbit serial SPI EEPROM organized as 512 words of 8 bits each. This high-reliability memory IC supports clock frequencies up to 20 MHz and operates across a wide voltage range of 1.8V to 5.5V, making it suitable for low-voltage battery-powered applications.

Why Choose This Part

This component offers high reliability with an industrial temperature range of -40C to 85C and ESD protection exceeding 4,000V. Its 8-byte page write mode and block write protection provide efficient data management and protection against accidental overwrites.

Applications

Configuration Storage
Ideal for storing calibration data, device settings, and user preferences in embedded systems.
Industrial Instrumentation
Maintains critical operational logs and sensor offset values in harsh environments requiring high ESD protection.
Consumer Electronics
Used in power-sensitive devices for persistent storage of firmware metadata and state information.

Key Specifications

Technology EEPROM
Memory Size 4Kbit
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 1.8V ~ 5.5V
Memory Organization 512 x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOIC
Write Cycle Time - Word, Page 5ms

Getting Started

To integrate this EEPROM, connect the SPI bus (CS, SCK, SI, SO) to a microcontroller and ensure the WP and HOLD pins are tied high if not used. Development can be performed using any standard SPI library on platforms like Microchip Studio or the Arduino IDE for rapid prototyping.

Also Consider

25LC040A-I/SN MCHPMicrochip Technology - An alternative 4Kb SPI EEPROM with similar pinout and 10 MHz clock speed for lower frequency requirements.
AT24C04D-SSHM-T MCHPMicrochip Technology - Consider this variant if your system architecture uses I2C instead of SPI for peripheral communication.

Categories

Memory & Storage > EEPROM