DS28E02
1-Wire SHA-1 Authenticated 1Kb EEPROM with 1.8V Operation
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Provides Low-Cost, Secure Bidirectional Authentication Over a Single Contact for Low-Power Applications
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Features
- 1024 Bits of EEPROM Memory Partitioned Into Four Pages of 256 Bits
- On-Chip 512-Bit SHA-1 Engine to Compute 160-Bit Message Authentication Codes (MACs) and to Generate Secrets
- Write Access Requires Knowledge of the Secret and the Capability of Computing and Transmitting a 160-Bit MAC as Authorization
- User-Programmable Page Write Protection for Page 0, Page 3, or All Four Pages Together
- User-Programmable OTP EPROM Emulation Mode for Page 1 ("Write to 0")
- Communicates to Host with a Single Digital Signal at 12.5kbps or 35.7kbps Using 1-Wire Protocol
- Switchpoint Hysteresis and Filtering to Optimize Communication Performance in the Presence of Noise
- Reads and Writes Over 1.75V to 3.65V Voltage Range from -20°C to +85°C
- 6-Lead TSOC and TDFN Packages
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The DS28E02 combines 1024 bits of EEPROM with challenge-and-response authentication security implemented with the FIPS 180-3 Secure Hash Algorithm (SHA-1). The 1024-bit EEPROM array is configured as four pages of 256 bits with a 64-bit scratchpad to perform write operations. All memory pages can be write protected, and one page can be put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. Each DS28E02 has its own guaranteed unique 64-bit ROM registration number that is factory installed into the chip. The DS28E02 communicates over the single-contact 1-Wire® bus. The communication follows the standard 1-Wire protocol with the registration number acting as the node address in the case of a multidevice 1-Wire network.
Applications
- Medical Consumable Authentication
- Printer Cartridge Configuration and Monitoring
- Reference Design License Management
- Sensor/Accessory Authentication and Calibration
- System Intellectual Property Protection
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DS28E02
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DS28E02: 1-Wire SHA-1 Authenticated 1Kb EEPROM with 1.8V Operation Data Sheet (Rev.1)
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Technical Articles 9
How to Build a 1-Wire® Evaluation Kit
1-Wire Communication Through Software
Tutorial: Improve Sensor Performance and SNR in Pulse Oximeter Designs
Protect Your R&D Investment with Secure Authentication
White Paper 9: Are SHA-1 Devices Still Secure Enough?
White Paper 8: 1-Wire® SHA-1 Overview
White Paper 3: Why are 1-Wire SHA-1 Devices Secure?
Protect Your FPGA Against Piracy: Cost-Effective Authentication Scheme Protects IP in SRAM-Based FPGA Designs
Xilinx® FPGA IFF Copy Protection with 1-Wire® SHA-1 Secure Memories
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
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- DS28E02Q+T&R
- Pin/Package Drawing
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Thin Dual Flatpack No Leads, Exposed Pad
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- DS28E02Q+U
- Pin/Package Drawing
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Thin Dual Flatpack No Leads, Exposed Pad
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
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PCN
Jun 20, 2016
- 1612
ASSEMBLY
DS28E02Q+T&R
PRODUCTION
DS28E02Q+U
PRODUCTION
Filter by Model
Part Models
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Jun 20, 2016
- 1612
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Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
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1-Wire Interface Products1 |
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PRODUCTION |
Single-Channel 1-Wire Master |
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1-Wire Secure Authenticators1 |
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PRODUCTION |
1-Wire SHA-1 Authenticator |
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Secure Microcontrollers1 |
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PRODUCTION |
SHA-1 Coprocessor with EEPROM |
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Can't find the software or driver you need?
Request a Driver/SoftwareEvaluation Kits 4
DS9481R-3C7
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 OTP/EPROM Programming Provided Without the Need of an External Power Supply (12V on OW, 7V on PULSE)
- 3.3V Read/Write Operation to 1-Wire/iButton Devices
- RJ11 Interface for Standard Connectivity Accessories such as the DS9120 Socket Adapter
- Supports Standard and Overdrive 1-Wire Communication
- Provides Strong Pullup to 3.3V
- Fully Compliant with USB 2.0 Specification
Product Detail
The DS9481R 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 3.3V data I/O level. Additionally, the adapter provides the support and signaling to program 1-Wire/iButton EEPROM and one-time programmable (OTP)/EPROM devices. To provide a total hardware solution, the DS9481R can readily be used with the DS9120 socket adapter 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.
Resources
DS9120P
Socket Boards for Evaluating 1-Wire Devices
Product Detail
The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.
Resources
DS9120
Socket Boards for Evaluating 1-Wire Devices
Product Detail
The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.
DS9120Q
Socket Boards for Evaluating 1-Wire Devices
Product Detail
The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.
Tools & Simulations 1
DeepCover® Security Lab
