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特性
- DS2431/DS28E07 Reverse Compatibility
- 2.25Kbits of EEPROM Memory Partitioned into 11 User Pages of 256 Bits (First Five Pages Compatible)
- 64-Bit Scratchpad Buffer for Compatible Secure Writing with Offset and Individual Addressing
- ±8kV HBM ESD Protection (typ) for IO Pin
- Efficient Secure Hash Algorithm to Authenticate Peripherals
- FIPS 202-Compliant SHA-3 Algorithm for Challenge/Response Authentication and Device Disable
- FIPS 198-Compliant Keyed-Hash Message Authentication Code (HMAC)
- Optional HMAC SHA3-256 Authenticated Write Protection of EEPROM
- Supplemental Features for Easy Integration into End Applications
- 17-Bit, One-Time Settable, Nonvolatile Decrement-Only Counter with Authenticated Read
- Secure Storage for Secret
- 2.25KBits of Secure EEPROM for User Data and Secret
- Unique and Unalterable, Factory-Programmed, 64-Bit Identification Number (ROM ID)
- Advanced 1-Wire Protocol Minimizes Interface to Single Contact
- Standard and Overdrive Communication Speed
- Internal Parasite Power Capacitor
- Operating Range: 2.8V to 5.25V, -40°C to +85°C
- SFN, SFN 6x6, TDFN-EP, TSOC, TO92 Packages
- 4.0μA (typ) Input Load Current
产品详情和应用
The DS28E54 secure authenticator combines FIPS 202- compliant secure hash algorithm (SHA-3) challenge and response authentication with secured electrically erasable programmable read-only memory (EEPROM).
The device provides a core set of cryptographic tools derived from integrated blocks, including an SHA-3 engine, 2.25Kbit of secured user EEPROM, a decrement-only counter, and a unique 64-bit ROM identification number (ROM ID), all while remaining reverse compatible to the DS2431/DS28E07.
The unique ROM ID is used as a fundamental input parameter for cryptographic operations and serves as an electronic serial number within the application.
The device communicates over the single-contact 1- Wire® bus.
The communication follows the 1-Wire protocol, with the ROM ID acting as the node address in the case of a multidevice 1-Wire network.
Applications
- Medical Tools/Accessories Authentication and Calibration
- Accessory and Peripheral Secure Authentication
- Battery Authentication and Charge Cycle Tracking
- Analog Sensor Calibration
