DeepCover secure authenticators


  • 512-Bit EEPROM with SHA-256 Authentication for Reads and Writes
    • Symmetric-Key-Based Bidirectional Secure Authentication Model Based on SHA-256
    • Strong Authentication with a High-Bit-Count User-Programmable Secret and Input Challenge
    • 512 Bits of User EEPROM Partitioned Into Two Pages of 256 Bits
    • User-Programmable and Irreversible EEPROM Protection Modes Including Authentication, Write and Read Protect and OTP/EPROM Emulation
    • Unique Factory-Programmed, 64-Bit Identification Number


  • Minimalist 1-Wire Interface Lowers Cost and Interface Complexity
    • Reduces Control, Address, Data, Power, and Programming Signals to a Single Data Pin
    • ±8kV HBM ESD Protection (typ)
    • 2-Pin SFN, 6-Pin TDFN-EP, and 6-Pin TSOC Packages
    • Operating Range: 3.3V ±10%, -40°C to +85°C

Applications Product Benefits
Medical IP Protection
Smart cables Counterfeit protection
Printers Protect end user data
Consumer License and feature management
Communications Restrict access or use
Batteries Peripheral authentication
Industrial control none


ALCATRAZ (MAXREFDES34#): SHA-256 Secure Authentication Design

Subsystem block diagram of Alcatraz reference design

Maxim Integrated

DeepCover Secure Authenticators

Protect R&D investment by preventing aftermarket knockoffs