DS28E35

PRODUCTION

DeepCover Secure Authenticator with 1-Wire ECDSA and 1Kb User EEPROM

Provides Affordable Elliptic-Curve Public-Key Authentication Security to Protect Your Development Investment

Data Sheet (Rev. 6)

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Part Details

ECDSA Engine for Public-Key Signature Using a Defined SEC Domain Parameter Set
On-Chip Hardware Random Number Generator
Private and Public Key Can Be Computed by the Device or Loaded from Outside with Optional Automatic Locking
Separate User-Programmable and Lockable Memory Space to Store a Public-Key Certificate
17-Bit One-Time Settable, Nonvolatile Decrement-On-Command Counter
SHA-256 Engine to Compute a Hash of EEPROM Page Data and Host Challenge for Subsequent ECDSA Signing
1024 Bit of User EEPROM Organized as Four Pages of 256 Bits
Programmable and Irreversible User EEPROM Protection Modes Including Write Protection, Read Protection, and OTP/EPROM Emulation for Individual Memory Pages
Unique Factory-Programmed 64-Bit Identification Number
Single-Contact 1-Wire Interface Communicates with Host at Up to 76.9kbps
Operating Range: 3.3V ±10%, -40°C to +85°C
±8kV HBM ESD Protection (typ) for IO Pin
8-Pin TDFN and 6-Pin TSOC Packages

Documentation

Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Security & Authentication 3
DS28E15	RECOMMENDED FOR NEW DESIGNS	DeepCover Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM
DS28E25	PRODUCTION	DeepCover Secure Authenticator with 1-Wire SHA-256 and 4Kb User EEPROM
DS28E22	PRODUCTION	DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM

Tools & Simulations

DeepCover® Security Lab

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Evaluation Kits

Evaluation System for the DS28E35

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Features and Benefits

Demonstrates the Features of the DS28E35 DeepCover 1-Wire ECDSA Authenticator with 1Kb User EEPROM
Demonstrates the Features of the DS2475 DeepCover ECDSA Coprocessor with 1-Wire Master
I²C and 1-Wire Sequences Are Logged to Aid Firmware Designers’ Understanding of DS2475 and DS28E35
1-Wire USB Adapter Creates a Virtual COM Port on Any PC
Fully Compliant with USB Specification v2.0
Software Runs on Windows 8, Windows 7, Windows Vista, and Windows XP, 32-bit and 64-bit Versions
3.3V ±3% 1-Wire Operating Voltage
Convenient On-Board Test Points, TSOC, and TO-92 Sockets
Evaluation Software Available by Request

Product Details

The DS28E35 evaluation system (EV system) provides the hardware and software necessary to exercise the features of the DS28E35 and DS2475. The EV system consists of a five DS28E35 devices in a 6-pin TSOC package, a DS9120PA evaluation TSOC socket board, DS28E35 plug-in module, and a DS28E35+ USB-to-1-Wire^® adapter. The evaluation software runs under Windows^® 8, Windows 7, Windows Vista^®, and Windows XP^® operating systems, both 32-bit and 64-bit versions. It provides a handy user interface to exercise the features of the DS28E35 and DS2475.