DS28EL22
Info: : PRODUCTION
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DS28EL22

DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM

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Protect Your Development Investment with Crypto-Strong Authentication and Advanced Physical Security

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $1.51
Features
  • Symmetric Key-Based Bidirectional Secure Authentication Model Based on SHA-256
  • Dedicated Hardware-Accelerated SHA Engine for Generating SHA-256 MACs
  • Strong Authentication with a High Bit Count, User-Programmable Secret, and Input Challenge
  • 2048 Bits of User EEPROM Partitioned Into 8 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
  • Single-Contact 1-Wire Interface Communicates with Host at Up to 76.9kbps
  • Operating Range: 1.8V ±5%, -40°C to +85°C
  • Low-Power 5µA (typ) Standby
  • ±8kV Human Body Model ESD Protection (typ)
  • 6-Pin TDFN Package
Additional Details
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DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible. The DeepCover Secure Authenticator (DS28EL22) combines crypto-strong, bidirectional, secure challenge-and-response authentication functionality with an implementation based on the FIPS 180-3-specified Secure Hash Algorithm (SHA-256). A 2Kb user-programmable EEPROM array provides nonvolatile storage of application data and additional protected memory holds a read-protected secret for SHA-256 operations and settings for user memory control. Each device has its own guaranteed unique 64-bit ROM identification number (ROM ID) that is factory programmed into the chip. This unique ROM ID is used as a fundamental input parameter for cryptographic operations and also serves as an electronic serial number within the application. A bidirectional security model enables two-way authentication between a host system and slave-embedded DS28EL22. Slave-to-host authentication is used by a host system to securely validate that an attached or embedded DS28EL22 is authentic. Host-to-slave authentication is used to protect DS28EL22 user memory from being modified by a nonauthentic host. The SHA-256 message authentication code (MAC), which the DS28EL22 generates, is computed from data in the user memory, an on-chip secret, a host random challenge, and the 64-bit ROM ID. The DS28EL22 communicates over the single-contact 1-Wire® bus at overdrive speed. The communication follows the 1-Wire protocol with the ROM ID acting as node address in the case of a multiple-device 1-Wire network.

Applications

  • Authentication of Network-Attached Appliances
  • Key Generation and Exchange for Cryptographic Systems
  • Printer Cartridge ID/Authentication
  • Reference Design License Management
  • Secure Feature Setting for Configurable Systems
  • Sensor/Accessory Authentication and Calibration
  • System Intellectual Property Protection
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.
Part Models 2
1ku List Price Starting From $1.51

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
DS28EL22Q+T
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DS28EL22Q+U
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  • HTML
Evaluation Kit

Evaluation Kits 2

DS28EL22EVKIT

Evaluation System for the DS28EL22 and DS24L65

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DS28EL22EVKIT

Evaluation System for the DS28EL22 and DS24L65

Evaluation System for the DS28EL22 and DS24L65

Features and Benefits

  • Complete EV System:
    • Five DS28EL22 ICs in TDFN-EP Package
    • One USB-to-I2C Module (DS9400#) Provides PC Connection
    • DS2465 EV Board Provides 1-Wire Interface and SHA-256 Coprocessor
    • One EV Board (DS9120Q+) with TDFN-EP Socket Provides Easy Chip Evaluation
  • USB-to-I2C Module Contains Prolific PL-2303HXD USB-to-UART Chip
    • Enumerates as a Virtual PC COM Port
    • Windows Certified Logo USB Device Driver Available
    • Standard USB Cable Interface
  • I2C Host Interface Supports 400kHz I2C Communication Speeds
  • EV Board Contains Convenient On-Board Test Points
  • Evaluation Software Will Be Provided Along with Full Evaluation Kit Data Sheet

Product Detail

The DS28EL22 evaluation system (EV system) provides the hardware and software necessary to evaluate and program the DS28EL22 DeepCover® Secure Authenticator. EV system operation requires a host PC for user-friendly evaluation.
This evaluation system includes a DS9400 USB-to-I2C PC adapter, a DS2465 EV board, a DS9120Q+ evaluation socket board for a TDFN DS28EL22, and five DS28EL22 sample devices in a TDFN package. The EV software runs on Windows® 8, Windows 7, Windows Vista®, and Windows XP® operating systems. Detailed instructions for downloading and installing software, as well as general EV system operation are included in the EV system data sheet; software and documentation are available at the link above.
Note: The DS2465 EV board and DS9400# subcomponents are not available for direct sale outside of evaluation systems. A data sheet specific to DS9400# is not available.

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DS9481R-200

USB-to-1-Wire/iButton Adapter

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DS9481R-200

USB-to-1-Wire/iButton Adapter

USB-to-1-Wire/iButton Adapter

Features and Benefits

  • Driver Support for Windows® 11 and Windows 10 Operating Systems
  • Enumerates as a Virtual PC COM Port by Use of the Prolific PL-2303GC USB-to-UART Bridge IC
  • Emulates the DS2480B 1-Wire Line Driving Functionality
  • 1-Wire EEPROM Programming
  • 1.8V Read/Write Operation to 1-Wire/iButton Devices
  • RJ11 Interface for Standard Connectivity Accessories such as the DS9120 Family of Socket Adapters
  • Supports Standard and Overdrive 1-Wire Communication
  • Provides Strong Pullup to 1.8V
  • Fully Compliant with USB 2.0 Specification

Product Detail

The DS9481R-200 is a USB-to-1-Wire® adapter for easy PC connectivity to 1-Wire devices. The adapter provides an RJ11 connector with the signals to communicate with all 1-Wire and iButton® devices that support a 1.8V data I/O level. Additionally, the adapter provides the support and signaling to program 1-Wire/iButton EEPROM devices. To provide a total hardware solution, the DS9481R-200 can readily be used with the family of DS9120 socket adapters to create a 1-Wire PC programmer for 1-Wire peripheral devices (contact factory for more information). The equivalent peripheral hardware solution for the iButton is the DS1402D-DR8.

APPLICATIONS

  • Identification and authentication of consumables
  • Reference Design License Management
  • Sensor/Accessory Authentication and Calibration
  • System Intellectual Property Protection
Reference Designs

Reference Designs 1

MAXREFDES34

SHA-256 Secure Authentication Design

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MAXREFDES34

SHA-256 Secure Authentication Design

SHA-256 Secure Authentication Design

Features and Benefits

  • SHA-256 authentication
  • Single-contact 1-Wire interface
  • Example source code
  • Pmod-compatible form factor

Competitive Advantages

  • Crypto-strong authentication
  • Single pin count interface
  • Fast performance with hardware acceleration

Applications

  • Counterfeit protection
  • Peripheral authentication
  • IP protection
  • License and feature management
View Detailed Reference Design external link

Design & Integration Tools

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