Secure and High-Density Serial EEPROM Memory Solutions with Microchip AT24CM01-XHM-B
In the rapidly evolving landscape of embedded systems and IoT applications, the demand for reliable, high-density, and secure non-volatile memory has never been greater. Addressing these critical needs, Microchip Technology’s AT24CM01-XHM-B stands out as a premier solution, offering 1 Mb of robust EEPROM storage in a compact serial interface package. This device combines high capacity with advanced security features, making it an ideal choice for applications where data integrity and protection are paramount.
The AT24CM01 belongs to Microchip’s family of high-density serial EEPROMs, featuring an industry-standard I²C interface that supports clock frequencies up to 1 MHz. This allows for efficient and fast read/write operations, ensuring seamless integration with a wide range of microcontrollers and processors. With a capacity of 128 KB (1 Mb), it provides ample space for storing application code, configuration parameters, user data, and event logs in systems such as industrial controllers, smart meters, medical devices, and automotive modules.
A key highlight of the AT24CM01-XHM-B is its enhanced hardware security architecture. The device includes advanced write protection mechanisms through both hardware and software controls. With a dedicated write-protect (WP) pin and programmable memory protection schemes, it allows sectors of the memory to be locked against unintended modifications. This ensures that critical firmware or sensitive data remains immutable, guarding against corruption or malicious attacks.
Moreover, the EEPROM supports sequential read functionality, which significantly boosts data throughput during read operations—a vital feature for real-time data access and system performance. Its high endurance of 1 million write cycles and data retention of up to 100 years ensure long-term reliability, even in harsh operating environments.
The AT24CM01-XHM-B is offered in a space-saving 8-pad TSSOP package, making it suitable for high-density PCB designs. Its wide voltage operation range (1.7V to 5.5V) further enhances its versatility across multiple power domains.

The Microchip AT24CM01-XHM-B is a superior choice for developers seeking a high-capacity, secure, and durable serial EEPROM. Its blend of large memory size, robust security features, and industry-standard compatibility makes it well-suited for next-generation embedded and IoT applications where data security and storage density are critical.
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Keywords:
EEPROM,
I²C Interface,
Data Security,
Non-Volatile Memory,
High-Density Storage
