MCHPAT24C02B

Overview

The AT24C02B is a 2-Kbit I2C serial EEPROM providing 256 bytes of non-volatile memory organized as 256 words of 8 bits each. It is designed for low-power and low-voltage operation, supporting a wide supply range from 1.8V to 5.5V. This component features noise suppression via Schmitt Trigger inputs and a dedicated hardware write protect pin for data security.

Why Choose This Part

The AT24C02B offers high reliability with an 8-byte page write mode and a self-timed write cycle. Its hardware write protection ensures critical data is safe from accidental overwrites, while filtered inputs reduce susceptibility to bus noise. The part is extremely efficient, drawing only 18uA in standby and 0.4mA during active reads at 100kHz.

Applications

Getting Started

Engineers can interface with the AT24C02B using any standard I2C master peripheral on a microcontroller. The hardware WP pin should be tied to GND for normal operation or VCC to protect the entire memory array. For initial prototyping, use a breadboard-compatible PDIP package (AT24C02B-PU) with 4.7k ohm pull-up resistors on the SDA and SCL lines.

Also Consider

24LC02B-I/P MCHPMicrochip Technology - A standard 2K I2C EEPROM that is widely available and often serves as a direct drop-in replacement.

M24C02-WMN6P STMicroelectronics - Features high endurance and 40-year data retention for long-term reliability applications.