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DeepCover ECDSA Coprocessor with 1-Wire Master

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

Product Details

Key Features

Parametric specs for Secure Authenticators
Crypto Engine Asymmetric
End Equipment Companion Coprocessor
IP Protection
Medical Consumable ID
PCB ID and Authentication
Print Cartridge Authentication
Bus Type 1-Wire
I2C
Deep Cover Yes
Package/Pins SOT23/6
Budgetary
Price (See Notes)
0
Parametric specs for 1-Wire Interface Products
Functions 1-Wire Bridge
ECDSA Coprocessing
VSUPPLY (V) 2.97 to 3.63
Package/Pins SOT23/6
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
0
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Simplified Block Diagram

Technical Docs

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Parameters

Parametric specs for Secure Authenticators
Crypto Engine Asymmetric
End Equipment Companion Coprocessor
IP Protection
Medical Consumable ID
PCB ID and Authentication
Print Cartridge Authentication
Bus Type 1-Wire
I2C
Deep Cover Yes
Package/Pins SOT23/6
Budgetary
Price (See Notes)
0
Parametric specs for 1-Wire Interface Products
Functions 1-Wire Bridge
ECDSA Coprocessing
VSUPPLY (V) 2.97 to 3.63
Package/Pins SOT23/6
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
0

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

Applications/Uses

  • Authentication of Accessories
  • Authentication of Consumables
  • Peripheral Authentication

Description

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.

Simplified Block Diagram

DS2475: Typical Application Circuit DS2475: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .