DS28E16 Datasheet

• Robust Countermeasures Protect Against Security Attacks
  • All Stored Data Cryptographically Protected from Discovery
• Efficient Secure Hash Algorithm Authenticates Peripherals
  • FIPS 202-Compliant SHA-3 Algorithm for Challenge/Response Authentication
  • FIPS 198-Compliant Keyed-Hash Message Authentication Code (HMAC)
• Supplemental Features Enable Easy Integration into End Applications
  • 17-Bit One-Time Settable, Nonvolatile Decrement-Only Counter with Authenticated Read
  • Secure Storage for Secrets
  • 256 Bits of Secure EEPROM for User Data
  • Unique and Unalterable Factory Programmed 64-Bit Identification Number (ROM ID)
  • Advanced 1-Wire Protocol Minimizes Interface to Single Contact
  • Full-Time Overdrive Communication Speed
  • Internal Parasite Power Capacitor
  • Operating Range: 1.71V–3.63V, -40°C to +85°C
  • WLP, TDFN-EP, and SFN Packages
  • ±8kV HBM ESD Protection (typ)
  • 3.5µA (typ) Input Load Current

• Accessory and Peripheral Secure Authentication
• Battery Authentication and Charge Cycle Tracking
• Medical Tools/Accessories Authentication and Calibration

The DS28E16 secure authenticator combines FIPS202-compliant Secure Hash Algorithm (SHA-3) challenge and response authentication with secured EEPROM.

The device provides a core set of cryptographic tools derived from integrated blocks including a SHA-3 engine, 256 bits of secured user EEPROM, a decrement-only counter and a unique 64-bit ROM identification number (ROM ID). The unique ROM ID is used as a fundamental input parameter for cryptographic operations and serves as an electronic serial number within the application. The device communicates over the single-contact 1-Wire® bus. The communication follows the 1-Wire protocol with the ROM ID acting as node address in the case of a multidevice 1-Wire network.