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ADM1025A Datasheet(PDF) 2 Page - ON Semiconductor

Part No. ADM1025A
Description  Low Cost PC Hardware Monitor ASIC
Download  21 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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ADM1025A Datasheet(HTML) 2 Page - ON Semiconductor

 
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ADM1025/ADM1025A
Preliminary Technical Data
Rev. P5 | Page 2 of 21| www.onsemi.com
TABLE OF CONTENTS
Features...............................................................................................1
Applications .......................................................................................1
Product Description .........................................................................1
Functional Block Diagram...............................................................1
Revision History................................................................................2
Specifications .....................................................................................3
Absolute Maximum Ratings ............................................................5
Thermal Characteristics...............................................................5
ESD Caution ..................................................................................5
Pin Configuration and Function Descriptions .............................6
Typical Performance Characteristics..............................................7
General Description..........................................................................9
Measurement Inputs .....................................................................9
Sequential Measurement..............................................................9
Processor Voltage ID ....................................................................9
ADD/RST/INT/NTO ...................................................................9
Internal Registers of the ADM1025/ADM1025A.....................9
Serial Bus Interface .......................................................................9
Measurement Inputs ...................................................................11
A/D Converter.............................................................................11
Input Circuits...............................................................................12
Temperature Measurement System ..............................................13
Internal Temperature Measurement ........................................13
External Temperature Measurement........................................13
Layout Considerations ...................................................................14
Limit Values .................................................................................14
Status Registers............................................................................14
Monitoring Cycle Time..............................................................14
Input Safety ..................................................................................14
Layout and Grounding...............................................................15
RST/INT Output .........................................................................15
Genterating an SMBALERT ......................................................15
NAND Tree Tests ........................................................................16
Using the ADM1025/ADM1025A................................................17
Power-On Reset ..........................................................................17
Initialization ................................................................................17
Using the Configuration Register.............................................17
Using the Offset Register ...........................................................17
Starting Conversion....................................................................17
Reduced Power and Shutdown Mode ......................................17
5 V Operation..............................................................................17
Registers ...........................................................................................18
Outline Dimensions........................................................................21
Ordering Guide ...........................................................................21
REVISION HISTORY
02/08—Rev P5: Conversion to ON Semiconductor
x/07—Rev. C to Rev. D
4/03—Rev. B to Rev. C
10/02—Rev. A to Rev. B
11/99—Revision 0: Initial Version


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