The Microchip 24LC04BT-E/SN: A Robust 4K I²C Serial EEPROM Solution

In the realm of embedded systems and electronics, reliable non-volatile memory is a fundamental component for storing critical data. The Microchip 24LC04BT-E/SN stands out as a premier choice, offering designers a robust and highly versatile 4Kbit serial EEPROM memory chip. This device exemplifies the critical balance of density, performance, and power efficiency required in modern applications.

Engineered for seamless integration, this chip organizes its 4 kilobits (512 x 8) of memory into two independent 256-byte blocks. Each block features its own internal write protect pin, providing enhanced data security by allowing sections of the memory to be hardware-locked against inadvertent writes. Communication is handled via the ubiquitous I²C (Inter-Integrated Circuit) serial interface, supporting both Standard (100 kHz) and Fast (400 kHz) mode operations. This two-wire protocol ensures simple interfacing with a vast array of microcontrollers and processors, minimizing PCB real estate and simplifying board layout.

A key attribute of the 24LC04BT-E/SN is its exceptional endurance and data retention. It is rated for 1 million erase/write cycles per byte and can reliably retain data for over 200 years, making it suitable for applications where data is frequently updated and must be preserved for the long term. Furthermore, it is designed for low-power operation, featuring a standby current of just 1 μA (max.), which is crucial for battery-powered and portable devices.

The device is offered in the compact 8-lead SOIC (SN) package, which is ideal for space-constrained designs. Its industrial temperature range (-40°C to +85°C) ensures stable and dependable performance across a wide spectrum of operating environments.

Typical applications are vast and include:

Storing calibration data, system parameters, and user settings.

Data logging in industrial control systems and sensors.

Consumer electronics such as smart TVs, set-top boxes, and printers.

Automotive subsystems for non-critical data storage.

ICGOODFIND: The Microchip 24LC04BT-E/SN is a quintessential serial EEPROM, delivering a proven combination of adequate density, superior reliability, and simple interfacing. Its hardware write protection and low-power characteristics make it an exceptionally flexible solution for a multitude of embedded design challenges.

Keywords: I²C Interface, Serial EEPROM, Non-volatile Memory, Low-Power, Data Retention