MAX31826 Maxim Integrated Products, MAX31826 Datasheet

MAX31826

Manufacturer Part Number

MAX31826

Description

1-Wire Digital Temperature Sensor

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX31826.pdf (22 pages)

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Download datasheet (3Mb)

The MAX31826 digital thermometer provides 12-bit

temperature measurements and communicates over a

1-Wire

(and ground) for communication with a central microcon-

troller. It has a -55NC to +125NC operating temperature

range and is accurate to Q0.5NC over the -10NC to +85NC

range. In addition, the device can derive power directly

from the data line (“parasite power”), eliminating the

need for an external power supply.

Each device has a unique 64-bit serial code, which

allows multiple devices to function on the same 1-Wire

bus. Therefore, it is simple to use one microcontroller

(the master device) to control many devices distributed

over a large area. The device includes 128 bytes (1Kb)

of EEPROM for storage of system data. The EEPROM

can be locked to permanently prevent any further data

writes. Four location address inputs simplify mapping of

individual devices to specific locations.

1-Wire and µMAX 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’s website at www.maxim-ic.com.

Industrial Systems

Building Automation

Consumer Equipment

4.7kΩ

bus that by definition requires only one data line

GND

�� Maxim Integrated Products 1

General Description

PARASITE-

CIRCUIT

POWER-

SUPPLY

POWER

SENSE

System Calibration

Module Identification

Applications

1-Wire Digital Temperature Sensor

1-Wire PORT

64-BIT ROM

AND

with 1Kb Lockable EEPROM

www.DataSheet.co.kr

S Unique 1-Wire Interface Requires Only One Port

S Integrated Temperature Sensor and EEPROM

S Multidrop Capability Simplifies Multisensor

S Can Be Powered from Data Line (3.0V to 3.7V

S 8-Pin µMAX

Ordering Information

For related parts and recommended products to use with this part,

refer to www.maxim-ic.com/MAX31826.related.

EEPROM

1Kb

Pin for Communication

Reduce Component Count

 Measures Temperatures from -55NC to +125NC

 ±0.5NC Accuracy from -10NC to +85NC

 12-Bit Temperature Resolution (0.0625NC)

 1Kb EEPROM Can Be Locked to Prevent Further

Systems

 Each Device Has a Unique 64-Bit Serial Code

 Four Pin-Programmable Bits to Uniquely

Power-Supply Range)

CONTROL LOGIC

SCRATCHPAD 1

(-67NF to +257NF)

Writes

Stored in On-Board ROM

Identify Up to 16 Sensor Locations on a Bus

MEMORY

SCRATCHPAD 2

Package

appears at end of data sheet.

Benefits and Features

8-BIT CONFIGURATION REGISTER

16-BIT TEMPERATURE REGISTER

8-BIT CRC GENERATOR

AD0 AD1 AD2 AD3

MAX31826

ADDRESS PIN

INPUT LATCH

Block Diagram

19-6264; Rev 0; 3/12

Datasheet pdf - http://www.DataSheet4U.net/

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