DS28E25G+T

The DS28E25G+T is a stand-alone secure authenticator and temperature sensing module, which applies to a variety of applications and markets. As an important element in the Memory classification, the DS28E25G+T chip combines one-time-programmable (OTP) memory, advanced cryptography and temperature sensing into a single low-power, 4.9kHz low-frequency extensive sensing module.

Applications

The most representative application of the DS28E25G+T chip is keyless access control. The chip supports various authentication methods using 2-Wire or advanced protocols such as 6-Wire or IO-Link, which can increase the security level of access control.

In addition, the integrated temperature sensing of the DS28E25G+T chip can provide temperature verification for medical and medical applications such as medical records, patient safety and medical device trust. The DS28E25G+T chip is also used in food traceability, shelf life and counterfeit prevention.

Working Principle

The DS28E25G+T chip has a dual-interface structure with a 2-Wire interface and a 6-Wire Interface working simultaneously and independently. The 2-Wire interface supports System Security (EzSNS-LF and Reveal protocols), IO-Link (I2C), and 1-Wire Protocols, while the 6-Wire interface supports System Security (EzSNS-LF and Reveal) and IO-Link (encrypted I2C) Protocols. The dual-interface capabilities allow the chip to be integrated into existing MCU-based systems.

The DS28E25G+T chip has multiple layers of security, which provides secure authentication against malicious attacks. To achieve this, the chip has an embedded secure Authentication Co-Processor (SACP) that uses the SHA-256 encryption algorithm to generate a signature hash. This signature is then transmitted to a host to verify authenticity. In addition, the DS28E25G+T chip also has a temperature sensing capability that enables the host to monitor and verify the environment.

The DS28E25G+T provides a secure, low-power, low-cost solution for a wide range of applications. It is an ideal choice for internet of things (IoT) applications such as measurement and verification, authentication, condition monitoring, and remote authentication and control. As an important element in the Memory classification, the DS28E25G+T chip offers a complete, secure solution for a broad range of products and applications.