DS28E40G/V+T

Specialized ICS Overview

The DS28E40G/V+T is a DeepCover secure authenticator designed for automotive applications, operating within a -40°C to +125°C temperature range. It integrates asymmetric (ECC-P256) and symmetric (SHA-256) cryptographic engines compliant with FIPS standards. The device includes a FIPS/NIST True Random Number Generator (TRNG), 6Kb of One-Time Programmable (OTP) memory, and a unique 64-bit ROM ID. Communication occurs via a single-contact 1-Wire interface supporting standard (9.09kbps) and overdrive (62.5kbps) speeds at a 3.3V ±10% supply voltage. It features an open-drain GPIO pin and is housed in a 10-pin TDFN package.

Specialized ICS Feature Summary

• Hardware-implemented ECC-P256 compute engine for ECDSA signature generation/verification and ECDH key exchange
• SHA-256 compute engine supporting FIPS 198 HMAC and one-time pad encrypted read/write operations
• Integrated FIPS/NIST TRNG with NIST SP 800-90B compliant entropy source
• 6Kb OTP memory divided into 3Kb user data and 3Kb keys/secrets storage

Specialized ICS Applications

• Automotive secure authentication
• Identification and calibration of automotive parts, tools, and accessories
• IoT node crypto-protection
• Secure boot or firmware download for host controllers

Specialized ICS Procurement Notes

Verify the specific package variant against the ordering suffix. The 'G' suffix indicates the 4mm x 3mm TDFN package (Code T1034+2), while other variants may use the 3mm x 3mm package. Confirm the '+T' designation corresponds to the reel packaging format containing 2,500 pieces as specified in the manufacturer's ordering information.

Specialized ICS Selection Notes

Select this component when AEC-Q100 Grade 1 qualification is required for automotive environments. Ensure the system design supports the 1-Wire protocol timing constraints, specifically the pullup resistor requirements and recovery times. Verify that the host controller can handle the computational delays associated with ECC key generation (500ms) and signature verification (160ms).

Specialized ICS Part Context

This part belongs to the DS28E40 DeepCover family of automotive 1-Wire authenticators. It provides hardware-accelerated security services to protect sensitive data against invasive and non-invasive attacks using active die shielding and encrypted storage. The device serves as a root of trust for bidirectional authentication between the host and peripheral devices.

Specialized ICS Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.