DS2465PT(2013) Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

DS2465PT
(Rev.:2013)

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

Maxim Integrated 

ABRIDGED DATA SHEET

DS2465

DeepCover Secure Authenticator with

SHA-256 Coprocessor and 1-Wire Master Function

General Description

DeepCover® embedded security solutions cloak sensi-

tive data under multiple layers of advanced physical

security to provide the most secure key storage possible.

The DeepCover Secure Authenticator (DS2465) 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, support-

ing 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 DS2465 can be put in sleep mode

where power consumption is minimal.

Ordering Information appears at end of data sheet.

Features

S SHA-256 Engine to Operate a Symmetric-Key-

Based Bidirectional Secure Authentication Model

S Two 32-Byte Pages of User EEPROM with Multiple

Programmable Protection Options

S 1-Wire Master Port with Selectable Active or

Passive 1-Wire Pullup

S Strong 1-Wire Pullup Provided by an Internal Low-

Impedance Signal Path

S 1-Wire Port Can Be Powered Down Under

Software Control

S I2C Operating (Pullup) Voltage: 3.3V ±10%

S ±8kV ESD Protection on IO to GND (JESD22-A114

HBM, Typical)

S Operating Range: 3.3V ±10%, -40NC to +85NC

S 6-Pin TSOC Package

Applications

Authentication of Consumables

Secure Feature Control

Typical Application Circuit

3V

(I2C PORT)

µC

RP

VCC

SDA

SCL

DS2465

RP = 1.1kΩ

MAXIMUM I2C BUS CAPACITANCE 320pF

1-Wire LINE

SLPZ

IO

DS28E15

#1

DS28E15

#2

DS28E15

#n

DeepCover and 1-Wire are registered trademarks of Maxim Integrated Products, Inc.

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

219-0017; Rev 3; 9/13

Share Link: