Maxim Integrated DS28E02P 1Kb Protected 1-Wire EEPROM with SHA-1 Engine

The DS28E02P from Maxim Integrated is a high-security, 1Kb EEPROM memory device that offers a unique blend of features tailored for applications requiring robust data security and integrity. This device integrates 1024 bits of EEPROM with a SHA-1 (Secure Hash Algorithm) engine, providing a secure method of storing and transferring data. It is designed to operate over the standard 1-Wire interface, which ensures minimal pin usage and simplifies system design for applications where board space is at a premium.

At the heart of the DS28E02P's security features is the SHA-1 engine, which can generate a Message Authentication Code (MAC) from the stored data and a 64-bit secret. This MAC can be used to verify the data's authenticity and integrity, ensuring that it has not been tampered with during communication. The device's memory is divided into pages, with each page containing its own 64-bit secret and set of access control bits, allowing for fine-grained control over read and write operations.

The EEPROM itself is partitioned into a 128-byte main data area and a 64-byte register area. The register area includes a unique, factory-programmed and laser-etched 64-bit ROM identification number, which provides a strong foundation for the device's anti-counterfeiting capabilities. This unique ID can be used to authenticate the device and ensure that it is a genuine Maxim Integrated product.

Designed for low-power applications, the DS28E02P operates from a wide voltage range of 2.8V to 5.25V and is available in a compact 6-pin TSOC package. Its small footprint and low power consumption make it an excellent choice for portable devices, medical equipment, and other applications where data security is paramount.

Overall, the DS28E02P from Maxim Integrated is a robust and secure memory solution that offers a combination of data protection, authentication, and minimalistic interfacing, making it a go-to choice for designers looking to incorporate secure data storage into their systems.