DS28E35P-W32+1

Specialized ICS Overview

The DS28E35P-W32+1 is a DeepCover Secure Authenticator featuring a 1-Wire ECDSA engine and 1Kb user EEPROM. It supports public-key signature generation using defined SEC domain parameters, an on-chip hardware random number generator, and SHA-256 hashing for challenge-response authentication. The device includes programmable memory protection modes, a unique 64-bit factory-programmed ID, and operates within a 3.3V ±10% range from -40°C to +85°C in an 8-pin TDFN package.

Specialized ICS Feature Summary

• ECDSA Engine for public-key signature generation with optional automatic locking of keys
• 1024-bit User EEPROM organized as four 256-bit pages with write/read protection and OTP emulation
• SHA-256 engine for computing hashes of EEPROM data and host challenges
• 17-bit nonvolatile decrement-on-command counter and unique 64-bit identification number

Specialized ICS Applications

• Authentication of consumables
• Peripheral authentication
• Medical sensor security
• Printer cartridge identification

Specialized ICS Procurement Notes

Verify the specific suffix W32 against official Analog Devices documentation to confirm pinout or marking variations. Confirm availability status through authorized distributors, as supply constraints may apply to this secure authenticator series.

Specialized ICS Selection Notes

Select this component when ECDSA-based mutual authentication is required alongside persistent data storage. Ensure the host system supports the 1-Wire protocol at speeds up to 76.9kbps. Verify that the 8-pin TDFN package fits the PCB layout constraints.

Specialized ICS Part Context

This part belongs to the DS28E3x family of DeepCover Secure Authenticators. It combines cryptographic capabilities with non-volatile memory, distinguishing it from pure memory devices like the DS28EC20 or simpler authenticators without EEPROM.

Specialized ICS Replacement Considerations

Direct replacements include other members of the DS28E3x family such as the DS28E35P+ or DS28E35P+T, provided the package and suffix requirements match. Cross-family substitution requires verification of interface compatibility and security feature parity.