DS28E30P+T

Specialized ICS Overview

The DS28E30P+T is a 1-Wire ECDSA secure authenticator integrating an ECC P-256 compute engine, true random number generator (TRNG), and 4Kb of EEPROM. It supports FIPS 186-compliant challenge-response authentication using preprogrammed keys. The device features a unique 64-bit ROM ID, a decrement-only counter, and operates over the 1-Wire bus at overdrive speeds up to 90.9kbps. Electrical specifications include a supply voltage range of 1.62V to 5V, input load current of 3.5µA typical, and data retention of 10 years. It is available in 4-bump WLP and 6-pin TSOC packages.

Specialized ICS Feature Summary

• FIPS 186-4 compliant ECDSA signature generation using NIST P-256 curve
• Integrated TRNG for secure nonce generation during cryptographic operations
• 4Kb total EEPROM: 1Kb user memory plus space for keys, certificates, and counters
• Unique factory-programmed 64-bit ROM ID serving as electronic serial number

Specialized ICS Applications

• Battery authentication and charge cycle tracking
• Medical tool and accessory authentication with calibration data storage
• Secure peripheral and accessory identification

Specialized ICS Procurement Notes

Verify package availability as the component is offered in both 4-wafer level pack (WLP) and 6-pin thin small-outline carrier (TSOC) configurations. Confirm that the specific ordering suffix matches the required physical footprint for the target PCB design. Ensure compatibility with the 1-Wire interface timing requirements specified in the electrical characteristics section.

Specialized ICS Selection Notes

Select this component when bidirectional asymmetric key authentication is required via a single-contact interface. The device is suitable for applications needing high ESD immunity on the IO pin and operation across a wide voltage range from 1.62V to 5V. Consider the 17-bit decrement-only counter feature if usage tracking or lifecycle management is part of the system architecture.

Specialized ICS Part Context

The DS28E30 belongs to the DeepCover Secure Authenticator family from Analog Devices/Maxim Integrated. It complements other 1-Wire security devices by providing hardware-based cryptographic acceleration without requiring external secure elements. The device utilizes proprietary techniques to protect stored data against invasive and noninvasive attacks.

Specialized ICS Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Verify functional equivalence regarding ECC engine capabilities, EEPROM size, and 1-Wire protocol support before considering alternative components.