Datasheet > DS28E22_V01

DS28E22_V01

更新时间： 2024-11-20 02:51:03

品牌	Logo	应用领域
美信 - MAXIM		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
6页	875K
描述
DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM

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DS28E22_V01 数据手册

ABRIDGED DATA SHEET

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Click here to ask an associate for production status of specific part numbers.

DeepCover Secure Authenticator with

1-Wire SHA-256 and 2Kb User EEPROM

DS28E22

General Description

DeepCover embedded security solutions cloak sensitive

Features

● Symmetric Key-Based Bidirectional Secure

data under multiple layers of advanced physical security to

provide the most secure key storage possible.

Authentication Model Based on SHA-256

● Dedicated Hardware-Accelerated SHA Engine for

The DeepCover Secure Authenticator (DS28E22) com-

bines crypto-strong, bidirectional, secure challenge-and-

response authentication functionality with an implemen-

tation based on the FIPS 180-3-specified Secure Hash

Algorithm (SHA-256). A 2Kb user-programmable EEPROM

array provides nonvolatile storage of application data and

additional protected memory holds a read-protected secret

for SHA-256 operations and settings for user memory

control. Each device has its own guaranteed unique 64-bit

ROM identification number (ROM ID) that is factory pro-

grammed into the chip. This unique ROM ID is used as a

fundamental input parameter for cryptographic operations

and also serves as an electronic serial number within

the application. A bidirectional security model enables

two-way authentication between a host system and slave-

embedded DS28E22. Slave-to-host authentication is used

by a host system to securely validate that an attached or

embedded DS28E22 is authentic. Host-to-slave authenti-

cation is used to protect DS28E22 user memory from being

modified by a nonauthentic host. The SHA-256 message

authentication code (MAC), which the DS28E22 gener-

ates, is computed from data in the user memory, an on-

chip secret, a host random challenge, and the 64-bit ROM

ID. The DS28E22 communicates over the single-contact

Generating SHA-256 MACs

● Strong Authentication with a High Bit Count, User-

Programmable Secret, and Input Challenge

● 2048 Bits of User EEPROM Partitioned Into 8 Pages

of 256 Bits

● User-Programmable and Irreversible EEPROM

Protection Modes Including Authentication, Write and

Read Protect, and OTP/EPROM Emulation

● Unique, Factory-Programmed 64-Bit Identification

Number

● Single-Contact 1-Wire Interface Communicates with

Host at Up to 76.9kbps

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

● Low-Power 5µA (typ) Standby

● ±8kV Human Body Model ESD Protection (typ)

● 6-Pin TDFN, 6-Lead TSOC Packages

Typical Application Circuit

3.3V

1-Wire bus at overdrive speed. The communication fol-

lows the 1-Wire protocol with the ROM ID acting as node

address in the case of a multiple-device 1-Wire network.

= 1.1kΩ

MAXIMUM I C BUS CAPACITANCE 320pF

SDA

SCL

(I C PORT)

DS2465

µC

Applications

1-Wire LINE

SLPZ

●

Authentication of Network-Attached Appliances

Printer Cartridge ID/Authentication

DS28E22

Reference Design License Management

System Intellectual Property Protection

Sensor/Accessory Authentication and Calibration

Secure Feature Setting for Conﬁgurable Systems

Key Generation and Exchange for Cryptographic

Systems

Ordering Information appears at end of data sheet.

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

219-0020; Rev 3; 7/21

One Analog Way, Wilmington, MA 01887 U.S.A.

Tel: 781.329.4700

12 3 4 5 6

中文翻译

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与DS28E22_V01相关器件

型号	品牌	获取价格	描述	数据表
DS28E22P	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 2Kb User EEPROM
DS28E22P+	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM
DS28E22P+T	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM
DS28E22Q	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 2Kb User EEPROM
DS28E22Q+T	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM
DS28E25	MAXIM	获取价格	The DS28E25 combines crypto-strong
DS28E25	ADI	获取价格	内置1-Wire SHA-256和4Kb用户EEPROM的DeepCover安全认证方案
DS28E25_V01	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire SHA-256 and 4Kb User EEPROM
DS28E25G+T	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 4Kb User EEPROM
DS28E25P+	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 4Kb User EEPROM

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