DS28E15P+T

Specialized ICS Overview

The DS28E15P+T is a DeepCover Secure Authenticator featuring a 1-Wire interface and SHA-256 cryptographic engine. It integrates a 512-bit user-programmable EEPROM array for nonvolatile application data storage alongside protected memory for read-protected secrets and control settings. The device utilizes a unique factory-programmed 64-bit ROM ID as a fundamental input for cryptographic operations and as an electronic serial number. It supports bidirectional secure challenge-and-response authentication based on the FIPS 180-3 specified SHA-256 algorithm, operating at overdrive speeds on a single-contact bus within a -40°C to +85°C temperature range.

Specialized ICS Feature Summary

• Symmetric-key-based bidirectional secure authentication model using SHA-256
• 512-bit user EEPROM partitioned into two 256-bit pages with irreversible protection modes
• Unique factory-programmed 64-bit identification number (ROM ID)
• Minimalist 1-Wire interface with ±8kV HBM ESD protection

Specialized ICS Applications

• Authentication of consumables
• Secure feature control

Specialized ICS Procurement Notes

Verify package availability against specific suffix requirements, such as TSOC or TDFN-EP, as the base part number covers multiple physical configurations. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure supply chain channels are authorized to guarantee component authenticity and traceability for security-critical deployments.

Specialized ICS Selection Notes

Select this component when bidirectional SHA-256 authentication and nonvolatile storage are required in a single contact interface. The 512-bit EEPROM capacity suits applications needing moderate data retention with strong write/read protection. Consider the 1-Wire protocol compatibility with existing host controllers and verify that the 3.3V ±10% operating voltage aligns with system power rails.

Specialized ICS Part Context

The DS28E15 belongs to the DeepCover Secure Authenticator family from Analog Devices/Maxim Integrated. This series focuses on embedding advanced physical security layers to protect sensitive keys and data. The DS28E15 specifically emphasizes symmetric key cryptography via SHA-256, distinguishing it from ECDSA-based counterparts in the same portfolio.

Specialized ICS Replacement Considerations

Direct functional replacements within the same family include other DS28E1x variants with differing EEPROM sizes or package options. Cross-family substitution requires careful evaluation of cryptographic algorithm differences, as SHA-256 symmetric models are not directly interchangeable with ECDSA asymmetric authenticators without protocol adjustments.