The Microchip 24LC04BT-E/OT: A Compact Powerhouse for Serial Data Storage

In the realm of embedded systems and IoT devices, efficient and reliable non-volatile memory is a fundamental component. The Microchip 24LC04BT-E/OT stands out as a robust solution, offering 4 Kbits (512 x 8) of Electrically Erasable Programmable Read-Only Memory (EEPROM) in a incredibly small SOT-23 packaging. This device is engineered for applications where board space is at a premium but data integrity is paramount.

Operating over a broad voltage range of 1.7V to 5.5V, this serial EEPROM is exceptionally versatile, suitable for everything from low-power battery-operated devices to standard 5V systems. Its low power consumption further enhances its appeal for portable and energy-sensitive designs. Communication is achieved via the ubiquitous I²C (Inter-Integrated Circuit) protocol, enabling simple interfacing with a vast array of microcontrollers and processors using only two bidirectional lines: Serial Clock (SCL) and Serial Data (SDA).

A key feature of the 24LC04BT-E/OT is its sophisticated memory organization. The 4K memory array is split into two hardware addressable blocks of 256 bytes each. This allows the system to effectively address up to four devices on the same I²C bus, maximizing data storage capacity without complicating the circuit layout. The chip also includes built-in hardware write-protection. When the WP (Write Protect) pin is held high, the entire memory array becomes protected against inadvertent write operations, safeguarding critical data.

With endurance capable of 1,000,000 erase/write cycles and data retention exceeding 200 years, this EEPROM is built for long-term deployment. Its commercial temperature range (0°C to +70°C) ensures reliable operation in most common environments. Typical applications range from storing device configuration parameters and user settings to data logging in consumer electronics, medical devices, and industrial systems.

ICGOOODFIND: The Microchip 24LC04BT-E/OT is an optimal choice for designers seeking a miniature, highly reliable, and easy-to-integrate non-volatile memory solution. Its combination of small form factor, low-voltage operation, and robust data protection features makes it a superior component for modern electronic designs.

Keywords: I²C EEPROM, Non-volatile Memory, Low-power, SOT-23, Write Protection