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ADM6320CX29ARJZ-R7 产品设计参考手册 - ADI（亚德诺）
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ADI（亚德诺）
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电源监控芯片
封装:
SOT-23-5
描述:
ANALOG DEVICES ADM6320CX29ARJZ-R7 监控器电路, 手动复位, 低电平有效复位, 1V-5.5V输入, SOT-23-5
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ADM6320CX29ARJZ-R7数据手册
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Supervisory Circuits with Watchdog
and Manual Reset in 5-Lead SOT-23
Data Sheet ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
Rev. F 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 ©2004–2013 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, 1600 ms, and 25.6 sec (typical)
Manual reset input
Reset output stages
Push-pull active low
Open-drain active low
Push-pull active high
Low power consumption: 5 µA
Guaranteed reset output valid to V
CC
= 1 V
Power supply glitch immunity
Specified over industrial temperature range
5-lead SOT-23 package
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Portable equipment
FUNCTIONAL BLOCK DIAGRAMS
ADM6316
V
CC
V
CC
MR
GND
WDI
RESET
RESET
GENERATOR
WATCHDOG
DETECTOR
DEBOUNCE
V
REF
04533-001
Figure 1.
ADM6320
V
CC
MR
GND WDI
RESET
RESET
GENERATOR
WATCHD
OG
DETECTOR
DEBOUNCE
V
REF
04533-028
Figure 2.
GENERAL DESCRIPTION
The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/
ADM6321/ADM6322 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 through a manual reset input. The seven parts feature
different combinations of watchdog input, manual reset input,
and output stage configuration, as shown in Table 1.
Each part 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,
1600 ms, and 25.6 sec (typical).
The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/
ADM6321/ADM6322 are available in 5-lead SOT-23 packages
and typically consume only 3 µA, making them suitable for use
in low power portable applications.
Table 1. Selection Table
Part No. Watchdog Manual Reset
Output Stage
RESET
RESET
ADM6316 Yes Yes Push-pull No
ADM6317 Yes Yes No Push-pull
ADM6318 Yes No Push-pull Push-pull
ADM6319 No Yes Push-pull Push-pull
ADM6320 Yes Yes Open-drain No
ADM6321 Yes No Open-drain Push-pull
ADM6322 No Yes Open-drain Push-pull
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