24LC32 I2C EEPROM Memory Module STEMMA QT / Qwiic Compatible

The 24LC32 I²C EEPROM module is a compact non-volatile memory board based on the Microchip 24LC32 chip, providing 32Kbit (4KB) of EEPROM storage.
This version features STEMMA QT / Qwiic connectors, allowing solder-free plug-and-play connection using standard JST-SH cables.

It is ideal for data logging, configuration storage, and memory expansion in Arduino, ESP32, Raspberry Pi, STM32, and other microcontroller projects.

Key Features

• STEMMA QT / Qwiic Compatible – Plug-and-play I²C connection, no soldering required

• Non-Volatile EEPROM – Data retained when power is off

• High Endurance – Up to 1,000,000 write/erase cycles

• Standard I²C Interface – Supports up to 400kHz communication

• Wide Voltage Support – 1.7V–5.5V (3.3V / 5V compatible)

• Ultra-Low Power – ~1mA during write, <1µA standby

• Multiple I²C Addresses – 0x50–0x57 selectable via A0/A1/A2 pins

• Onboard Pull-ups – Works out of the box with most controllers

Typical Applications

• Device configuration and parameter storage

• Sensor data logging (temperature, humidity, counters)

• External EEPROM for Arduino, ESP8266/ESP32, STM32, Raspberry Pi

• Reducing wear on internal flash memory

• Educational projects and embedded system prototyping

Technical Specifications

• Chip Model: Microchip 24LC32

• Memory Capacity: 32Kbit (4KB)

• Interface: I²C (up to 400kHz)

• Operating Voltage: 1.7V – 5.5V

• Write Endurance: 1,000,000 cycles

• Data Retention: >200 years

• Operating Temperature: -40°C to +85°C

• Module Size: ~18.6 × 25.3 mm

Package Includes

• 1 × 24LC32 I²C EEPROM Module (STEMMA QT / Qwiic Compatible)

• 1 × 2.54mm Pin Header (optional soldering)