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 * 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