Reading and Writing Serial EEPROMs

≡ Pages

Contributors:

Nate,

Nick Poole

Favorited Favorite 15

Introduction

NOTE: Users with the Qwiic EEPROM, will want to check out the Qwiic EEPROM Hookup Guide.

EEPROM, or Electrically Erasable Programmable Read-Only Memory, is a type of device that allows you to store small chunks of data and retrieve it later even if the device has been power cycled. A lot of modern microcontrollers – such as the ATmega328 – contain some built-in EEPROM, but that doesn't mean that you can't add more! Serial EEPROM devices like the Microchip 24-series EEPROM allow you to add more memory to any device that can speak I²C. Today we're going to learn how to read and write serial EEPROM devices using Arduino.

Library Now Available: We've created an External EEPROM Library for Arduino that makes reading and writing an EEPROM easy. This tutorial is still very good knowledge and background to have. Please read then consider using the library.

I2C EEPROM - 256k Bit (24LC256)

COM-00525

1 Retired

Favorited Favorite 27

Required Materials

To follow along with this tutorial, you will need the following materials. You may not need everything though depending on what you have. Add it to your cart, read through the guide, and adjust the cart as necessary.