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DS2475：DeepCover ECDSA Coprocessor with 1-Wire Master

Offloads Host ECDSA Computing and 1-Wire Line Driving from Host Processor

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible. The DeepCover Elliptic Curve Digital Signature Algorithm (ECDSA) coprocessor with built-in 1-Wire® master (DS2475) enables the efficient implementation of public- key based authentication when combined with an ECDSA secure authenticator. Additionally, for operation with 1-Wire ECDSA authenticators, an I2C-to-1-Wire protocol conversion function relieves the system host processor from generating time-critical 1-Wire waveforms. The DS2475 interfaces directly to standard (100kHz max) or fast (400kHz max) I2C masters. When not in use, the DS2475 can be put in sleep mode where power consumption is minimal.

Key Features High-Speed ECDSA Engine for Public-Key Signature Verification Implements NIST FIPS 186-Based ECDSA Algorithm Integrated NIST FIPS 180 SHA-256 Engine for Efficient ECDSA Input Data Computation 1-Wire Line Driver Supporting Both Standard and Overdrive Communication Speeds Supports Power-Saving Sleep Mode (SLPZ Pin) ±8kV ESD Protection on IO to GND (JESD22-A114 HBM, typ) Operating Range: 3.3V ±10%, -40°C to +85°C 6-Pin SOT23 Package

DS2475: Typical Application Circuit Applications/Uses Authentication of Accessories Authentication of Consumables Peripheral Authentication

DataSheet

Parametrics

Design kits & evaluation modules

• DS28E35EVKIT

Quality and Environmental Data

• DS2475.pdf

Related Products

• DS28E35：DeepCover Secure Authenticator with 1-Wire ECDSA and 1Kb User EEPROM

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