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DeepCover Secure Authenticator with SHA-256 Coprocessor and 1-Wire Master Function

Advanced Physical Security Protects System Secret, Offloads Host SHA-256 Computing

Product Details

Key Features

Parametric specs for Secure Authenticators
Crypto Engine Symmetric
End Equipment Companion Coprocessor
IP Protection
Medical Consumable ID
PCB ID and Authentication
Print Cartridge Authentication
Bus Type 1-Wire
I2C
Memory Type EEPROM
Memory Size 512 bits
Deep Cover Yes
Package/Pins TSOC/6
Parametric specs for 1-Wire Interface Products
Functions 1-Wire Bridge
SHA-256 Coprocessing
VSUPPLY (V) 1.71 to 1.89
Package/Pins TSOC/6
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
1.18
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Simplified Block Diagram

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Parameters

Parametric specs for Secure Authenticators
Crypto Engine Symmetric
End Equipment Companion Coprocessor
IP Protection
Medical Consumable ID
PCB ID and Authentication
Print Cartridge Authentication
Bus Type 1-Wire
I2C
Memory Type EEPROM
Memory Size 512 bits
Deep Cover Yes
Package/Pins TSOC/6
Parametric specs for 1-Wire Interface Products
Functions 1-Wire Bridge
SHA-256 Coprocessing
VSUPPLY (V) 1.71 to 1.89
Package/Pins TSOC/6
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
1.18

Key Features

  • SHA-256 Engine to Operate a Symmetric-Key-Based Bidirectional Secure Authentication Model
  • Two 32-Byte Pages of User EEPROM with Multiple Programmable Protection Options
  • 1-Wire Master Port with Selectable Active or Passive 1-Wire Pullup
  • Strong 1-Wire Pullup Provided by an Internal Low-Impedance Signal Path
  • 1-Wire Port Can Be Powered Down Under Software Control
  • I²C Operating (Pullup) Voltage: 1.8V ±5%
  • ±8kV ESD Protection on IO to GND (JESD22-A114 HBM, Typical)
  • Operating Range: 1.8V ±5%, -40°C to +85°C
  • 6-Pin TSOC Package

Applications/Uses

  • Authentication of Consumables
  • Secure Feature Control

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 Secure Authenticator (DS24L65) is a SHA-256 coprocessor with built-in 1-Wire® master that provides the SHA-256 and memory functionality required by a host system to communicate with and operate a 1-Wire SHA-256 slave. In addition, it performs protocol conversion between the I²C master and any attached 1-Wire SHA-256 slaves. For 1-Wire line driving, internal user-adjustable timers relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and overdrive 1-Wire communication speeds. The 1-Wire line can be powered down under software control. Strong pullup features support 1-Wire power delivery to 1-Wire devices such as EEPROMs. When not in use, the DS24L65 can be put in sleep mode where power consumption is minimal.

A DS24L65 evaluation board is included in each of the authenticator evaluation kits below.

Simplified Block Diagram

DS24L65: Typical Application Circuit DS24L65: Typical Application Circuit Zoom icon

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 .