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ADM8318 Datasheet(PDF) 1 Page - Analog Devices

No. de pieza ADM8318
Descripción Electrónicos  Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
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ADM8318 Datasheet(HTML) 1 Page - Analog Devices

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Supervisory Circuits with Watchdog
and Manual Reset in 5-Lead SOT-23
Data Sheet
ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
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
6.3 ms, 102 ms, 1.6 sec, and 25.6 sec (typical)
Manual reset input
Multiple reset output options
Low power consumption
Specified over wide temperature range (−40°C to +125°C)
Qualified for automotive applications
5-lead SOT-23 package
APPLICATIONS
Automotive infotainment
Microprocessor systems
Computers
Controllers
Intelligent instruments
Portable equipment
FUNCTIONAL BLOCK DIAGRAMS
Figure 1. ADM8316
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.
ADM8316
VCC
VCC
MR
GND
WDI
RESET
RESET
GENERATOR
WATCHDOG
DETECTOR
DEBOUNCE
VREF
ADM8320
VCC
MR
GND
WDI
RESET
RESET
GENERATOR
WATCHDOG
DETECTOR
VREF
DEBOUNCE


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