AT24C32E-XHM-B: A Deep Dive into a 32K I2C Serial EEPROM Memory Solution

The AT24C32E-XHM-B stands as a prominent and highly reliable solution in the realm of non-volatile memory, offering 32 kilobits (4 kilobytes) of electrically erasable and programmable read-only memory (EEPROM). This device is engineered for a broad spectrum of applications, from industrial systems and automotive electronics to consumer gadgets and IoT devices, where dependable data storage is paramount.

A key feature of this memory chip is its utilization of the I2C (Inter-Integrated Circuit) serial interface. This two-wire serial protocol, comprising a Serial Data Line (SDA) and a Serial Clock Line (SCL), drastically reduces the number of pins required for microcontroller interconnection. This leads to simplified board layout, reduced system cost, and enhanced overall design flexibility. The device supports a maximum clock frequency of 1MHz (Fast-mode Plus), enabling efficient and high-speed data transfer.

The AT24C32E-XHM-B is organized as 4096 words of 8 bits each, providing a versatile structure for storing system parameters, calibration data, or user settings. It incorporates advanced features such as a 32-byte page write buffer, which allows for faster writing of small data blocks compared to single-byte writes. For enhanced data integrity, the chip includes both hardware and software write protection schemes. The dedicated WP (Write Protect) pin can be asserted to safeguard the entire memory array from inadvertent writes.

Designed for robustness, this EEPROM operates across a wide voltage range (1.7V to 5.5V) and is built to endure an impressive 1,000,000 write cycles. Furthermore, it guarantees excellent data retention for over 100 years, ensuring that critical information remains intact for the lifetime of the product it serves. Its extended temperature range makes it suitable for demanding environments.

ICGOODFIND: The AT24C32E-XHM-B is a quintessential choice for designers seeking a high-reliability, low-power, and space-efficient non-volatile memory. Its industry-standard I2C interface, extensive endurance, and robust data retention make it an optimal component for modern electronic systems requiring dependable parameter storage.

Keywords:

I2C Interface

Non-Volatile Memory

32 Kilobit

Data Retention

Page Write Buffer