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DS28E16
1-Wire Secure SHA-3 Authenticator
General Description
The DS28E16 secure authenticator combines FIPS202-
compliant Secure Hash Algorithm (SHA-3) challenge and
response authentication with secured EEPROM.
Benefits and Features
● Robust Countermeasures Protect Against Security
Attacks
• All Stored Data Cryptographically Protected from
Discovery
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
● 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)
®
device communicates over the single-contact 1-Wire bus.
● Supplemental Features Enable Easy Integration into
End Applications
The communication follows the 1-Wire protocol with the
ROM ID acting as node address in the case of a multidevice
1-Wire network.
• 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
Applications
● Medical Tools/Accessories Authentication and
Calibration
● Accessory and Peripheral Secure Authentication
● Battery Authentication and Charge Cycle Tracking
• 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)
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
• 3.5µA (typ) Input Load Current
Typical Application Circuit
V
CC
Ordering Information appears at end of data sheet.
R
P
V
CC
V
CC
IO
2
I C
SDA
SCL
DS2477
PORT
µC
IO
GPIO
GND
IO
DS28E16
GND
GND
19-100438; Rev 2; 1/20