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AT24C02: 2Kbit I2C EEPROM Datasheet & Buying Guide

AT24C02 guide: 2Kbit I2C EEPROM, pinout, applications, alternatives and sourcing tips.

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The AT24C02 is a 2Kbit serial EEPROM used to store configuration data. This guide covers its specifications, usage and procurement.

By Vigny (深圳市华芯购电子有限公司) · Published 2026-09-27 · Data verified 2026-09-29 · Sources: manufacturer datasheets & HuaXinGou stock verification

Device Overview

The AT24C02 provides 256 bytes of EEPROM organized as 32 pages of 8 bytes, accessed over a standard I2C interface at up to 1 MHz. It operates at 1.8V-5.5V and comes in SOIC-8, TSSOP-8 and DIP-8.

Applications

It stores calibration data, device IDs, MAC addresses and user settings in set-top boxes, TVs, meters, industrial controllers and battery packs.

Alternatives

Compatible parts include Microchip 24AA02/24LC02 and other AT24C02 variants from multiple manufacturers. Always check the address pin (A0-A2) configuration for your bus.

Sourcing

AT24C02 is a commodity part available in tape and reel. Confirm brand, batch and package when ordering. HuaXinGou quotes stock availability and price on request.

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Frequently Asked Questions

What is the memory size of AT24C02?
2 Kbit = 256 bytes of EEPROM.
What is the write endurance?
Typically 1,000,000 write cycles per byte with 100-year data retention.
Is AT24C02 compatible with 24C02 from other vendors?
Yes, most 24C02 devices are pin and command compatible; verify the write cycle timing for your design.

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