If you want to store calibration values, MAC addresses, non-secure access tokens, or other unique identifiers, EEPROM storage is a great option. EEPROM is long lasting, and doesn't need to be written in pages - a single byte can be written at once (unlike with flash memory!) EEPROM storage persists even when the power goes out, and can be over-written literally one million times.

Some microcontrollers, like the ATmega328, have built in EEPROM, usually around 64 to 1024 bytes of it. But some, especially ARM Cortex's, don't! What then? that's where this petite Adafruit 24LC32 I2C EEPROM Breakout comes in to help! With 32 Kbit (4 KByte) of storage, and handy chainable Stemma QT connectors, it's just the right amount of simple I2C-controllable storage. Since its external to your microcontroller or microcomputer, uploading new flash memory won't wipe the data from this chip.

  • We use the CAT24C32 (or equivalent) EEPROM, internally organized as 4096 words of 8 bits each. It features a 32 byte page write buffer (if you want to write faster than one byte at a time). Use 2 to 5V power/logic and up to 1 MHz clocked I2C. The default I2C address is 0x50 and there are three external address pins / jumpers to allow addressing of up to eight EEPROM devices on the same bus.
  • To make things easier and a bit more flexible, we've also included SparkFun Qwiic compatible STEMMA QT connectors for the I2C bus so you don't even need to solder! Just plug in a compatible cable and attach it to your MCU of choice, and you’re ready to store and retrieve from a reliable and durable EEPROM. QT Cable is not included, but we have a variety in the shop. 

For Arduino usage, we recommend our FRAM/EEPROM library.



Technical Details:

  • Product Dimensions: 25.4mm x 17.7mm x 4.5mm / 1.0" x 0.7" x 0.2"
Note: You may get an off-white or black JST connector.

Features:

  • Supports Standard, Fast and Fast−Plus I2C Protocol
  • 1.7 V to 5.5 V Supply Voltage Range
  • 32−Byte Page Write Buffer
  • Hardware Write Protection for Entire Memory
  • Schmitt Triggers and Noise Suppression Filters on I2C Bus Inputs (SCL and SDA)
  • Low Power CMOS Technology
  • 1,000,000 Program/Erase Cycles
  • 100 Year Data Retention
  • Default I2C address 0x50

Documentation:

Package Includes:

  • 1 x Adafruit 5146 24LC32 I2C EEPROM Breakout - 32Kbit / 4 KB - Stemma QT

Write a review

Please login or register to review

Adafruit 5146 24LC32 I2C EEPROM Breakout - 32Kbit / 4 KB - Stemma QT

  • Brand: Adafruit
  • Product Code:NR-Ada-5146-24LC32-I2C-EEPROM-Breakout
  • Reward Points:4
  • Availability:In Stock
  • रo 426.00

  • Price in reward points:450

  • 45 or more रo 374.00
  • 361 or more रo 372.00

Related Products

Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic

Adafruit 4756 LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic

I2C stands for Inter-Integrated-Circuit communications, its meant for short distances on a PCB or su..

रo 809.00

Adafruit 4899 SPI Flash SD Card - XTSD 512 MB

Adafruit 4899 SPI Flash SD Card - XTSD 512 MB

This breakout is for a fascinating chip - it looks like an SPI Flash storage chip but its really an ..

रo 1,025.00

Adafruit 4903 ISO1540 Bidirectional I2C Isolator - STEMMA QT / Qwiic

Adafruit 4903 ISO1540 Bidirectional I2C Isolator - STEMMA QT / Qwiic

Whatever it is, you can use the Adafruit ISO1540 Bidirectional I2C Isolator to add full electrical i..

रo 856.00 रo 966.00

Adafruit 4132 GPIO Expander Bonnet - 16 Additional I/O over I2C

Adafruit 4132 GPIO Expander Bonnet - 16 Additional I/O over I2C

The Raspberry Pi is an amazing single board computer - and one of the best parts is that GPIO connec..

रo 1,074.00

Adafruit 2264 FT232H Breakout - General Purpose USB to GPIO, SPI, I2C - USB C & Stemma QT

Adafruit 2264 FT232H Breakout - General Purpose USB to GPIO, SPI, I2C - USB C & Stemma QT

Wouldn't it be cool to drive a tiny OLED display, read a color sensor, or even just flash some LEDs ..

रo 1,615.00

Adafruit 4471 MCP2221A Breakout - General Purpose USB to GPIO ADC I2C - Stemma QT / Qwiic

Adafruit 4471 MCP2221A Breakout - General Purpose USB to GPIO ADC I2C - Stemma QT / Qwiic

Wouldn't it be cool to drive a tiny OLED display, read a color sensor, or even just flash some LEDs ..

रo 702.00

Adafruit 1897 SPI Non-Volatile FRAM Breakout - 64Kbit / 8KByte

Adafruit 1897 SPI Non-Volatile FRAM Breakout - 64Kbit / 8KByte

FRAM, or Ferroelectric Ram, is the coolest new data storage method that all the fashion magazines ar..

रo 642.00

Adafruit 5159 TCA4307 Hot-Swap I2C Buffer with Stuck Bus Recovery - STEMMA QT / Qwiic

Adafruit 5159 TCA4307 Hot-Swap I2C Buffer with Stuck Bus Recovery - STEMMA QT / Qwiic

As we've been adding  STEMMA QT connectors to our breakouts and dev boards, folks have been rea..

रo 534.00

Tags: Adafruit, EEPROM, Breakout, Stemma QT

The product is currently Out-of-Stock. Enter your email address below and we will notify you as soon as the product is available.

Name
Email
Phone
Comments