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ADM8322

更新时间： 2024-09-25 00:48:19
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亚德诺 - ADI /
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16页 314K
描述
Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23

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ADM8322 数据手册

 浏览型号ADM8322的Datasheet PDF文件第2页浏览型号ADM8322的Datasheet PDF文件第3页浏览型号ADM8322的Datasheet PDF文件第4页浏览型号ADM8322的Datasheet PDF文件第5页浏览型号ADM8322的Datasheet PDF文件第6页浏览型号ADM8322的Datasheet PDF文件第7页 
Supervisory Circuits with Watchdog  
and Manual Reset in 5-Lead SOT-23  
ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAMS  
26 reset threshold options  
2.5 V to 5 V in 100 mV increments  
4 reset timeout options  
1 ms, 20 ms, 140 ms, and 1120 ms (minimum)  
4 watchdog timeout options  
ADM8316  
V
CC  
V
CC  
RESET  
GENERATOR  
RESET  
V
REF  
6.3 ms, 102 ms, 1.6 sec, and 25.6 sec (typical)  
Manual reset input  
Multiple reset output options  
DEBOUNCE  
MR  
WATCHDOG  
DETECTOR  
Low power consumption  
Specified over wide temperature range (−40°C to +125°C)  
Qualified for automotive applications  
5-lead SOT-23 package  
GND  
WDI  
Figure 1. ADM8316  
APPLICATIONS  
ADM8320  
Automotive infotainment  
Microprocessor systems  
Computers  
RESET  
V
CC  
RESET  
GENERATOR  
V
REF  
Controllers  
Intelligent instruments  
Portable equipment  
MR  
DEBOUNCE  
WATCHDOG  
DETECTOR  
GND  
WDI  
Figure 2. ADM8320  
GENERAL DESCRIPTION  
The ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/  
ADM8322 are supervisory circuits that monitor power supply  
voltage levels and code execution integrity in microprocessor-  
based systems. As well as providing power-on reset signals, an  
on-chip watchdog timer can reset the microprocessor if it fails  
to strobe within a preset timeout period. A reset signal can also  
be asserted by an external push-button switch through a manual  
reset input. The six devices feature different combinations of  
watchdog input, manual reset input, and output stage  
configuration, as shown in Table 6.  
Each device is available in a choice of 26 reset threshold options  
ranging from 2.5 V to 5 V in 100 mV increments. There are also  
four reset timeout options of 1 ms, 20 ms, 140 ms, and 1120 ms  
(minimum) and four watchdog timeout options of 6.3 ms, 102 ms,  
1.6 sec, and 25.6 sec (typical).  
The ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/  
ADM8322 are available in 5-lead SOT-23 packages and  
typically consume only 10 µA, making them suitable for use in  
low power, portable applications.  
Rev. 0  
Document Feedback  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Technical Support  
©2013 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 
 
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