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ADM6711 Datasheet(PDF) 1 Page - Analog Devices

Part No. ADM6711
Description  Microprocessor Supervisory Circuit in 4-Lead SC70
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM6711 Datasheet(HTML) 1 Page - Analog Devices

   
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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. 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 companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© 2003 Analog Devices, Inc. All rights reserved.
ADM6711/ADM6713
Microprocessor Supervisory
Circuit in 4-Lead SC70
FUNCTIONAL BLOCK DIAGRAMS
VREF
VCC
RESET
GENERATOR
240 ms
ADM6711
RESET
GND
DEBOUNCE
MR
VREF
VCC
RESET
GENERATOR
240 ms
ADM6713
RESET
GND
DEBOUNCE
MR
FEATURES
Specified Over Temperature
Low Power Consumption (12
A)
Precision Monitoring of 2.5 V, 3 V, 3.3 V, and 5 V Power
Supply Voltages
Reset Timeout Period of 140 ms (Min)
Manual Reset Input
Output Stages
Push-Pull
RESET Output (ADM6711)
Open-Drain
RESET Output (ADM6713)
Reset Assertion Down to 1 V VCC
Power Supply Glitch Immunity
4-Lead SC70 Package
APPLICATIONS
Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Automotive Systems
Portable Instruments
GENERAL DESCRIPTION
The ADM6711/ADM6713 are reset generator circuits suitable
for use in microprocessor based systems. They provide a reset
signal on power-up, power-down, and whenever the supply volt-
age falls below a preset threshold. In addition, both parts have a
debounced manual reset input so that a reset signal can also be
initiated with an external switch or logic signal.
With six different reset threshold options available ranging from
2.32 V to 4.63 V, the ADM6711/ADM6713 are suitable for
monitoring 2.5 V, 3 V, 3.3 V, and 5 V supplies. A reset timeout
of at least 140 ms occurs when VCC rises above the threshold.
This gives the supply voltage time to stabilize before the micro-
processor starts up.
The ADM6711 has a push-pull output, so no additional external
components are needed. The ADM6713’s open-drain output
requires an external pull-up resistor, which can be connected to a
voltage higher than VCC, if desired.
The parts are highly reliable with accurate voltage references
and immunity to fast, negative-going transients on VCC. Low
current consumption and space-efficient 4-lead SC70 packaging
make the ADM6711/ADM6713 ideal for use in low power
portable applications.
RESET
RESET
GND
GND
VCC
VCC
P
SYSTEM
ADM6711/
ADM6713
VCC
*RPULL-UP
*ADM6713 ONLY
MR
Figure 1. Typical Operating Circuit


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