DS28CN01

NOT RECOMMENDED FOR NEW DESIGNS

1Kbit I²C/SMBus EEPROM with SHA-1 Engine

Low-Cost, High-Security, SHA-1-Based Authentication Solution Provides Clone Prevention, IP Protection, and License Management

Data Sheet (Rev. 2)
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Part Details

  • 1024 Bits of EEPROM Memory Partitioned Into Four Pages of 256 Bits
  • Dedicated Hardware-Accelerated SHA Engine for Generating SHA-1 MACs
  • EEPROM Memory Pages can be Individually Copy-Protected or Put Into an EPROM Mode (Program from 1 to 0 Only)
  • Write Access Requires Knowledge of the Secret and the Capability of Computing and Transmitting a 160-Bit MAC as Authorization
  • Unique, Factory-Programmed, and Tested 64-Bit Registration Number Assures Absolute Traceability Because No Two Parts are Alike
  • Endurance 200k Cycles at +25°C
  • Serial Interface User Programmable for I²C Bus and SMBus Compatibility
  • Supports 100kHz and 400kHz I²C Communication Speeds
  • 5.5V Tolerant Interface Pins
  • Operating Range: 1.62V to 5.5V, -40°C to +85°C
  • 8-Pin µSOP Package
DS28CN01
1Kbit I²C/SMBus EEPROM with SHA-1 Engine
DS28CN01: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Application Note 1

Design Note 1

Technical Articles 2

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Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).

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Hardware Ecosystem

Parts Product Life Cycle Description
1-Wire Secure Authenticators 1
DS28E01-100
PRODUCTION 1Kb Protected 1-Wire EEPROM with SHA-1 Engine
Secure Microcontrollers 1
DS2460
PRODUCTION SHA-1 Coprocessor with EEPROM
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Evaluation Kits

DSAUTHSK

Evaluation Kit for the DS28E01-100, DS28CN01, and DS2460

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Features and Benefits

  • Complete Development System for Applications Using Maxim SHA-1 Products
  • Starter Kit Board Includes Maxim's DS2460, DS2482-100, DS28CN01, and DS28E01 Devices for Rapid Development
  • Other and Future Maxim SHA-1 Authenticators Supported Through Expansion Ports
  • Embedded Host Development Options Supported with PIC18F4550 µC and Xilinx XC3S400A FPGA
  • PC Connectivity with RS-232 and USB 2.0
  • JTAG Connector Mates to Xilinx Platform Cables Through a Single Ribbon Cable
  • 120-Pin Expansion Port for FPGA
  • In-Circuit Debugger Port for PIC18F4550
  • 40-Pin Expansion Port for PIC18F4550 Periphery
  • Extension Ports for I²C and 1-Wire Bus
  • Jumper Configurable for µC or FPGA as I²C Master
  • Jumper Configurable for µC, FPGA, DS2482-100, or External 1-Wire Bus Master
  • Six General-Purpose Pushbuttons and Indicator LEDs
  • LED Indicators for Power and FPGA Load Done
  • Free Evaluation Software Available by NDA

Product Details

The secure authentication starter kit is a highly programmable hardware/software system for development, lab testing, and demonstration of embedded applications that use Maxim's SHA-1-based secure authentication products. The system supports multiple options for demonstrating and developing both host SHA-1 computation and associated host communication with Maxim's 1-Wire® and I²C-based SHA-1 slave ICs. Multiple options are supported for host SHA-1 computation development including fixed function processing with the Maxim DS2460, microcontroller(FC)-based with a Microchip PIC18F4550, and a Maxim-developed SHA-1 Verilog implementation (DSSHA1) used in conjunction with a Xilinx Spartan®-3A XC3S400A FPGA. Development capabilities for the host interface to Maxim's SHA-1 slaves are similarly supported with multiple options including the Maxim DS2482-100 I²C-to-1-Wire line driver, software generation of 1-Wire waveforms with the PIC18F4550, and a Verilog implementation (DS1WM) with the Xilinx FPGA. The EV kit can be used alone or controlled with a PC over RS-232 or USB interfaces. Microcontroller software can be installed and tested through an in-circuit debugger port. A JTAG port allows changing the FPGA programming through standard Xilinx development tools. With its expansion ports (40 pins for the microcontroller, 120 pins for the FPGA), the board can be the development platform for complex designs.
The free software/firmware is available by request at https://support.maximintegrated.com/1-Wire.

Applications

  • Accessory and Peripheral Identification
  • Equipment Registration and License Management
  • Medical Sensor Authentication and Calibration
  • Network Node Identification
  • Printed Circuit Board Unique Serialization
  • Printer Cartridge Configuration and Monitoring
  • System Intellectual Property Protection
DSAUTHSK
Evaluation Kit for the DS28E01-100, DS28CN01, and DS2460

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