Datasheet > DS28EA00

DS28EA00

更新时间： 2024-11-24 14:58:03

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
29页	1118K
描述
1-Wire数字温度计，具有顺序检测和PIO

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中文翻译

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DS28EA00 数据手册

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DS28EA00

1-Wire Digital Thermometer with

Sequence Detect and PIO

General Description

Features

● Digital Thermometer Measures Temperatures

The DS28EA00 is a digital thermometer with 9-bit (0.5°C)

to 12-bit (1/16°C) resolution and alarm function with non-

volatile (NV), user-programmable upper and lower trigger

points. Each DS28EA00 has its own unique 64-bit registra-

tion number that is factory programmed into the chip. Data

from -40°C to +85°C

● Thermometer Resolution is User Selectable from

9 to 12 Bits

● Unique 1-Wire Interface Requires Only One Port

is transferred serially through the 1-Wire protocol, which

Pin for Communication

requires only one data line and a ground reference for com-

munication. The improved 1-Wire front-end with hysteresis

and glitch filter enables the DS28EA00 to perform reliably

in large 1-Wire networks. Unlike other 1-Wire thermom-

eters, the DS28EA00 has two additional pins to implement

a sequence-detect function. This feature allows the user to

discover the registration numbers according to the physical

device location in a chain, e.g., to measure the temperature

in a storage tower at different height. If the sequence-detect

function is not needed, these pins can be used as general-

purpose input or output. The DS28EA00 can derive the

power for its operation directly from the data line (“parasite

power”), eliminating the need for an external power supply.

● Each Device Has a Unique 64-Bit, Factory-

Lasered Registration Number

● Multidrop Capability Simplifies Distributed

Temperature-Sensing Applications

● Improved 1-Wire Interface with Hysteresis and

Glitch Filter

● User-Definable NV Alarm Threshold Settings/User

Bytes

● Alarm Search Command to Quickly Identify

Devices Whose Temperature is Outside of

Programmed Limits

Applications

● Standard and Overdrive 1-Wire Speed

● Data Communication Equipment

● Process Temperature Monitoring

● HVAC Systems

● Two General-Purpose Programmable IO (PIO) Pins

● Chain Function Sharing the PIO Pins to Detect

Physical Sequence of Devices in Network

● Operating Range: +3.0V to +5.5V, -40°C to +85°C

● Can Be Powered from Data Line

● 8-Pin μSOP Package

Ordering Information

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

8 µSOP

DS28EA00U+

DS28EA00U+T&R

8 µSOP

Pin Configuration appears at end of data sheet.

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

T&R = Tape and reel.

Typical Operating Circuit

1-Wire

MASTER

PX. Y

DS28EA00

MICROCONTROLLER

PIOB

PIOA

PIOB

PIOA

PIOB

PIOA

GND

NOTE: SCHEMATIC SHOWS PIO PINS WIRED FOR SEQUENCE-DETECT FUNCTION.

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

19-7831; Rev 2; 6/19

12 3 4 5 6 7...29

中文翻译

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与DS28EA00相关器件

型号	品牌	获取价格	描述	数据表
DS28EA00U+	DALLAS	获取价格	1-Wire Digital Thermometer with Sequence Detect and PIO
DS28EA00U+	MAXIM	获取价格	1-Wire Digital Thermometer with Sequence Detect and PIO
DS28EA00U+T	DALLAS	获取价格	1-Wire Digital Thermometer with Sequence Detect and PIO
DS28EA00U+TR	MAXIM	获取价格	1-Wire Digital Thermometer with Sequence Detect and PIO
DS28EC20	MAXIM	获取价格	20Kb 1-Wire EEPROM
DS28EC20	DALLAS	获取价格	20Kb 1-Wire EEPROM
DS28EC20	ADI	获取价格	20Kb 1-Wire EEPROM
DS28EC20 T	MAXIM	获取价格	DS28EC20_1203
DS28EC20_11	MAXIM	获取价格	20Kb 1-Wire EEPROM
DS28EC20_1203	MAXIM	获取价格	DS28EC20_1203

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