EmbeddedRelated.com
The 2026 Embedded Online Conference
AT24C64D-SSHM-T

AT24C64D-SSHM-T

Microchip (formerly Atmel)
Widely available 64-Kbit I2C EEPROM with broad software support and multiple package options.
NRND18,231 in stock

Overview

The AT24C64D-SSHM-T is a 64-Kbit I2C serial EEPROM organized as 8,192 words of 8 bits each. It is designed for low-power and low-voltage operation, supporting a wide supply range from 1.7V to 5.5V. This non-volatile memory device is optimized for industrial and commercial applications where reliable data storage is critical.

Why Choose This Part

This device features a fast 1 MHz clock frequency and a self-timed write cycle of maximum 5ms, ensuring efficient data throughput. It includes a dedicated Write Protect pin for hardware-based data security and Schmitt Trigger inputs for improved noise suppression in harsh electrical environments.

Applications

Configuration Storage
Storing calibration data, user settings, and network configuration parameters in embedded systems.
Asset Tracking
Logging serial numbers, revision history, and maintenance records in industrial equipment.
Consumer Electronics
Retaining state information and preset values in appliances and personal electronic devices.

Key Specifications

Technology EEPROM
Access Time 550 ns
Memory Size 64Kbit
Memory Type Non-Volatile
Memory Format EEPROM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 1 MHz
Memory Interface I2C
Voltage - Supply 1.7V ~ 5.5V
Memory Organization 8K x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOIC
Write Cycle Time - Word, Page 5ms

Getting Started

Connect the SCL and SDA pins to your microcontroller I2C bus with appropriate pull-up resistors, typically 4.7k ohms. Ensure the WP pin is tied to GND for write operations or Vcc for hardware write protection. For software development, use standard I2C libraries such as the Arduino Wire library or Microchip's MCC-generated drivers.

Also Consider

M24C64-WMN6TP STMicroelectronics - A highly compatible 64-Kbit EEPROM offering similar voltage ranges and I2C performance.
CAT24C64WI-GT3 ONonsemi - Provides a 64-Kbit capacity and 1 MHz clock speed, suitable for price-sensitive high-volume designs.
The 2026 Embedded Online Conference