MCHP24LC256-I/MF

Overview

The 24LC256-I/MF is a 256-Kbit I2C serial EEPROM organized as 32K x 8 bits, designed for low-power applications requiring non-volatile storage. It operates across a wide voltage range from 2.5V to 5.5V and features a 64-byte page write capability. This specific variant is housed in a compact DFN package, providing a space-efficient footprint for modern PCB designs.

Why Choose This Part

This EEPROM supports a high-speed clock frequency of up to 400 kHz and features an endurance of 1,000,000 erase/write cycles. Its 2.5V operation makes it compatible with both legacy 5V systems and modern 3.3V logic levels. The DFN package offers superior thermal performance and a reduced profile compared to traditional SOIC options.

Applications

Getting Started

Connect the SCL and SDA lines to your microcontroller's I2C peripheral with appropriate pull-up resistors, typically 4.7k ohms. Ensure the three address pins (A0, A1, A2) are hardwired to ground or VCC to set the I2C slave address. Use standard I2C libraries such as the Microchip XC8 peripheral libraries or the Arduino Wire library for rapid firmware development.

24LC256 Family

Comparing specs that differ across variants. The current part is highlighted.

Also Consider

24LC256-I/SN MCHPMicrochip Technology - This is the same 256-Kbit EEPROM but in an 8-lead SOIC package, which is easier for manual soldering and prototyping.

AT24C256C-SSHL-T MCHPMicrochip Technology - An alternative 256-Kbit I2C EEPROM that offers a lower minimum operating voltage of 1.7V for ultra-low power designs.

M24256-BRMN6P STMicroelectronics - A pin-compatible 256-Kbit I2C EEPROM alternative with similar timing and voltage specifications.

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