MAX66242

DeepCover Secure Authenticator with ISO 15693, I²C, SHA-256, and 4Kb User EEPROM

Industry's First SHA-256 Symmetric Key-Based Authenticator with I²C Master Port


Description

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.

Our Secure Drug Delivery video shows how Maxim security products can be used to authenticate remote drug delivery.

The DeepCover Secure Authenticator (MAX66242) is a transponder IC that combines an ISO/IEC 15693 and ISO 18000-3 Mode 1-compatible RF front-end, an I2C front-end, a FIPS 180-based SHA-256 engine and 4096 bits of user EEPROM in a single chip. A bidirectional security model enforces two-way authentication between a host system and the MAX66242. Each device has its own guaranteed unique 64-bit ROM ID that is factory programmed into the chip. This ROM ID is used as a fundamental input parameter for cryptographic operations and serves as an electronic serial number within the application.

In addition to the RF interface, the MAX66242 also has an I2C interface, which can operate as a slave or master port. When acting as a master, the MAX66242 can gather information from a connected sensor or peripheral device and relay its data via the RF port. When acting as a slave, the device can serve as an intermediary between a connected host and an RF reader. The MAX66242 can harvest energy from an active RF field. The configurable supply output can deliver up to 5mA given adequate field strength.
MAX66242: Typical Application Circuit MAX66242: Typical Application Circuit Enlarge+

Key Features

  • Complete Counterfeit/Cloning/IP Protection Engine
    • SHA-256 Engine Runs a Symmetric Key-Based Bidirectional Secure Authentication
    • Strong Authentication Achieved with a High Bit Count, User-Programmable Secret, and Input Challenge
    • Batteryless RF Communication
    • 4096 Bits of User EEPROM with User-Programmable Memory
    • Memory R/W Protection Options Including OTP/EPROM Emulation Mode
    • Unique Factory-Programmed 64-Bit Identification Number
    • Integrated 32-Byte SRAM Buffer Enables Faster HF-to-I2C Transactions
  • Flexible Connection and Communication Capabilities Support a Wide Range of Applications
    • Programmable I/O (PIO) Can Be Configured as a Wake-Up or Monitoring/Control Signal
    • HF Standards ISO/IEC 15693 and 18000-3 MODE1 Compatible (13.56 MHz ±7kHz Carrier Frequency)
    • I2C Interface—Master/Slave Port Eliminates Host Microcontroller for Sensor-Tag Applications
    • Energy Harvesting VOUT Pin for Powering External Components
    • Optional 3.3V Supply Voltage Fits Line and Battery-Powered Applications
    • -20°C to +85°C Operating Temperature Range
  • Enables Robust Design
    • ±8kV HBM ESD Protection

Applications/Uses

  • Access Control
  • Asset Tracking
  • Medical Sensor Authentication and Calibration
  • Printer Cartridge Configuration and Monitoring
  • System Intellectual Property Protection
Part Number Protocol Functions Applications Memory Type Memory Size Security Features Oper. Temp.
(°C)
Package/Pins
MAX66242  ISO15693 Tag
Access Control
Asset Tracking
Electronic Access Control
IP Protection
Medical Sensor Authentication and Calibration
Printer Cartridge Configuration and Monitoring
System Intellectual Property Protection
EEPROM
4K bits
4K x 1
SHA-256
Write-Only Secrets
-20 to +85
SOIC(N)/8
TDFN/10
See All NFC/RFID Products (3)

Part Number Applications Memory Type Memory Size Bus Type VSUPPLY
(V)
Deep Cover Oper. Temp.
(°C)
Package/Pins
MAX66242 
Access Control
Asset Tracking
Electronic Access Control
IP Protection
Medical Sensor Authentication and Calibration
Printer Cartridge Configuration and Monitoring
System Intellectual Property Protection
EEPROM
4K bits
4K x 1
I2C
ISO 15693
2.97 to 3.63 Yes -20 to +85
SOIC(N)/8
TDFN/10
See All Secure Authenticators (17)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX66242EVKIT: Evaluation Kit for the MAX66242
MAX66300-24XEVKIT: Evaluation Kit for the MAX66300/MAX66242
 

Related Resources


DS28E07
1024-Bit, 1-Wire EEPROM

  • Partitioning of Memory Provides Greater Flexibility in Programming User Data
  • Advanced 1-Wire Protocol Minimizes Interface to Just Single IO Reducing Required Pin Count and Enhancing Reliability