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
