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The RT9430 battery authenticator uses challenge and response authentication based on SHA-256 (FIPS 180-3) hash algorithm to ensure that the battery pack is certified by the original manufacturer. The device supports 34 bytes of programmable non-volatile memory for users to access battery information, 4 bytes Device_ID for chip supplier information and system user information, and 8 bytes unique ROM ID for chip identification code. The RT9430 communicates over the single-wire Interface.
SHA-256 FIPS 180-3 Symmetric-Key-Based Secure Authentication Model
34 Bytes of User NVM
32 Bytes of Secret
8 Bytes of ROM_ID
4 Bytes of Device_ID
Support NVM Write and Read Protect
Supports Anonymous Authentication Mode
Single-Wire Interface Bit Rate 50kbps, Supports Normal Mode and Fast Mode
TWL-CSP 1.46x1.16mm Package
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