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AT24C02D

MCHPAT24C02D

Microchip Technology
Widely used 2-Kbit I2C EEPROM (Atmel lineage) available in many packages
Active9,369 in stock
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Overview

The Microchip AT24C02D is a 2-Kbit I2C compatible EEPROM, providing non-volatile data storage. It is designed for general-purpose data logging and configuration parameter storage in a wide range of embedded systems. This device supports clock frequencies up to 1 MHz and operates from a supply voltage range of 1.7V to 3.6V.

Why Choose This Part

The AT24C02D offers a reliable and cost-effective solution for non-volatile data storage with its robust EEPROM technology and standard I2C interface. Its wide operating voltage range from 1.7V to 3.6V makes it suitable for both 1.8V and 3.3V systems. The availability in small packages like SOT-23-5 (TSOT-23-5) helps conserve PCB space in compact designs.

Applications

Configuration Storage
Storing system configuration parameters that need to persist across power cycles, such as user settings or device calibration data.
Data Logging
Recording small amounts of event data or sensor readings periodically, where non-volatility is crucial and frequent writes are not typically required.
System Identification
Storing unique identifiers or manufacturing data for a device, allowing for easy identification and tracking.
Bootloader Parameters
Holding parameters for bootloaders, such as firmware versions or flags, to guide the system's startup process.
Simple Event Counters
Implementing simple event counters or usage trackers for devices where a dedicated MCU flash might be inconvenient or too costly.

Key Specifications

Technology EEPROM
Access Time 4.5 us
Memory Size 2Kbit
Memory Type Non-Volatile
Memory Format EEPROM
Mounting Type Surface Mount
Package / Case SOT-23-5 Thin, TSOT-23-5
Clock Frequency 1 MHz
Memory Interface I2C
Voltage - Supply 1.7V ~ 3.6V
Memory Organization 256 x 8
Operating Temperature -40degC ~ 85degC (TC)
Supplier Device Package SOT-23-5
Write Cycle Time - Word, Page 5ms

Getting Started

To get started with the AT24C02D, connect its SDA and SCL pins to the I2C bus of a microcontroller. Most microcontrollers have built-in I2C peripherals and example code for EEPROM access. Software libraries are widely available for reading and writing data, often requiring only the device address and memory location. A pull-up resistor is typically required on both SDA and SCL lines.

Also Consider

M24C02 STMicroelectronics - The M24C02 is an industry-standard 2Kbit I2C EEPROM from STMicroelectronics, providing an alternative with similar functionality and package options.
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