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MAX31826MUA PDF预览

MAX31826MUA

更新时间: 2024-11-26 07:17:23
品牌 Logo 应用领域
美信 - MAXIM 传感器温度传感器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
22页 1638K
描述
1-Wire Digital Temperature Sensor with 1Kb Lockable EEPROM

MAX31826MUA 数据手册

 浏览型号MAX31826MUA的Datasheet PDF文件第2页浏览型号MAX31826MUA的Datasheet PDF文件第3页浏览型号MAX31826MUA的Datasheet PDF文件第4页浏览型号MAX31826MUA的Datasheet PDF文件第5页浏览型号MAX31826MUA的Datasheet PDF文件第6页浏览型号MAX31826MUA的Datasheet PDF文件第7页 
19-6264; Rev 0; 3/12  
General Description  
Benefits and Features  
The MAX31826 digital thermometer provides 12-bit  
temperature measurements and communicates over a  
1-Wire bus that by definition requires only one data line  
(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.  
S Unique 1-Wire Interface Requires Only One Port  
Pin for Communication  
M
S Integrated Temperature Sensor and EEPROM  
Reduce Component Count  
Measures Temperatures from -55NC to +125NC  
(-67NF to +257NF)  
±±05NC Accuracy from -1±NC to +85NC  
12-Bit Temperature Resolution (±0±625NC)  
1Kb EEPROM Can Be Locked to Prevent Further  
Writes  
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.  
S Multidrop Capability Simplifies Multisensor  
Systems  
Each Device Has a Unique 64-Bit Serial Code  
Stored in On-Board ROM  
Four Pin-Programmable Bits to Uniquely  
Identify Up to 16 Sensor Locations on a Bus  
S Can Be Powered from Data Line (30±V to 307V  
Power-Supply Range)  
®
Applications  
S 8-Pin µMAX Package  
Ordering Information appears at end of data sheet.  
Industrial Systems  
Building Automation  
Consumer Equipment  
System Calibration  
For related parts and recommended products to use with this part,  
refer to www.maxim-ic.com/MAX31826.related.  
Module Identification  
Block Diagram  
V
PU  
4.7k  
MEMORY  
CONTROL LOGIC  
DQ  
PARASITE-  
POWER  
CIRCUIT  
MAX31826  
64-BIT ROM  
AND  
1-Wire PORT  
GND  
1Kb  
SCRATCHPAD 2  
EEPROM  
C
PP  
16-BIT TEMPERATURE REGISTER  
POWER-  
SUPPLY  
SENSE  
V
DD  
SCRATCHPAD 1  
8-BIT CRC GENERATOR  
8-BIT CONFIGURATION REGISTER  
ADDRESS PIN  
INPUT LATCH  
AD0 AD1 AD2 AD3  
1-Wire and µMAX are registered trademarks of Maxim Integrated Products, Inc.  
����������������������������������������������������������������� Maxim Integrated Products  
1
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.  

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