Datasheet > 存储 > EEPROM> DS28E02Q+R

DS28E02Q+R

更新时间： 2024-11-19 11:47:51

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
21页	186K
描述
1-Wire SHA-1 Authenticated 1Kb EEPROM with 1.8V Operation

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DS28E02Q+R 数据手册

ABRIDGED DATA SHEET

219-0008; Rev 1; 3/12

1-Wire SHA-1 Authenticated 1Kb

EEPROM with 1.8V Operation

DS8E02

General Description

Features

The DS28E02 combines 1024 bits of EEPROM with

challenge-and-response authentication security imple-

mented with the FIPS 180-3 Secure Hash Algorithm

(SHA-1). The 1024-bit EEPROM array is configured as

four pages of 256 bits with a 64-bit scratchpad to per-

form write operations. All memory pages can be write

protected, and one page can be put in EPROM-emula-

tion mode, where bits can only be changed from a 1 to

a 0 state. Each DS28E02 has its own guaranteed

unique 64-bit ROM registration number that is factory

installed into the chip. The DS28E02 communicates

o 1024 Bits of EEPROM Memory Partitioned Into

Four Pages of 256 Bits

o On-Chip 512-Bit SHA-1 Engine to Compute 160-

Bit Message Authentication Codes (MACs) and to

Generate Secrets

o Write Access Requires Knowledge of the Secret

and the Capability of Computing and Transmitting

a 160-Bit MAC as Authorization

o User-Programmable Page Write Protection for

Page 0, Page 3, or All Four Pages Together

over the single-contact 1-Wire bus. The communica-

tion follows the standard 1-Wire protocol with the regis-

tration number acting as the node address in the case

of a multidevice 1-Wire network.

o User-Programmable OTP EPROM Emulation Mode

for Page 1 (“Write to 0”)

o Communicates to Host with a Single Digital

Signal at 12.5kbps or 35.7kbps Using 1-Wire

Protocol

Applications

Reference Design License Management

System Intellectual Property Protection

Sensor/Accessory Authentication and Calibration

Medical Consumable Authentication

o Switchpoint Hysteresis and Filtering to Optimize

Communication Performance in the Presence of

Noise

o Reads and Writes Over 1.75V to 3.65V Voltage

Range from -20°C to +85°C

Printer Cartridge Configuration and Monitoring

o 6-Lead TSOC and TDFN Packages

Typical Operating Circuit

Ordering Information

PART

DS28E02P+

TEMP RANGE

-20°C to +85°C

PIN-PACKAGE

6 TSOC

DS28E02P+T&R

6 TSOC

PUP

6 TDFN-EP*

(2.5k pcs)

DS28E02Q+T&R

-20°C to +85°C

+Denotes a lead(Pb)-free/RoHS-compliant package.

T&R = Tape and reel.

µC

DS28E02

*EP = Exposed pad.

GND

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...21

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与DS28E02Q+R相关器件

型号	品牌	获取价格	描述	数据表
DS28E02Q+T	MAXIM	获取价格	1-Wire SHA-1 Authenticated 1Kb EEPROM with 1.8V Operation
DS28E02Q+TR	MAXIM	获取价格	1-Wire SHA-1 Authenticated 1Kb EEPROM with 1.8V Operation
DS28E04-100	DALLAS	获取价格	4096-Bit Addressable 1-Wire EEPROM with PIO
DS28E04-100	MAXIM	获取价格	4096-Bit Addressable 1-Wire EEPROM with PIO
DS28E04-100	ADI	获取价格	4096位、可寻址、1-Wire EEPROM，带有PIO
DS28E04S-100	DALLAS	获取价格	4096-Bit Addressable 1-Wire EEPROM with PIO
DS28E04S-100/T	MAXIM	获取价格	EEPROM
DS28E04S-100/T&R	MAXIM	获取价格	EEPROM, 4KX1, Parallel/serial, CMOS, PDSO16, 0.150 INCH, SOP-16
DS28E05	MAXIM	获取价格	Single-Contact 1-Wire Interface
DS28E05	ADI	获取价格	1-Wire EEPROM

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