adm6318cy29arjz-r7 Analog Devices, Inc., adm6318cy29arjz-r7 Datasheet

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adm6318cy29arjz-r7

Manufacturer Part Number
adm6318cy29arjz-r7
Description
Supervisory Circuit With Watchdog And Manual Reset In 5-lead Sot-23
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADM6318CY29ARJZ-R7.pdf (16 pages)

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Part Number:
ADM6318CY29ARJZ-R7
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FEATURES
26 reset threshold options
4 reset timeout options
4 watchdog timeout options
Manual reset input
Reset output stages
Low power consumption (5 μA)
Guaranteed reset output valid to V
Power supply glitch immunity
Specified over industrial temperature range
5-lead SOT-23 package
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Portable equipment
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.
Table 1. Selection Table
Part No.
ADM6316
ADM6317
ADM6318
ADM6319
ADM6320
ADM6321
ADM6322
Rev. C
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.
2.5 V to 5 V in 100 mV increments
1 ms, 20 ms, 140 ms, and 1120 ms (minimum)
6.3 ms, 102 ms, 1600 ms, and 25.6 sec (typical)
Push-pull active low
Open-drain active low
Push-pull active high
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
Watchdog
Yes
Yes
Yes
No
Yes
Yes
No
CC
= 1 V
Yes
Yes
No
Yes
Yes
No
Yes
Manual Reset
Supervisory Circuits with Watchdog
and Manual Reset in 5-Lead SOT-23
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
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.
V
MR
V
CC
MR
CC
V
REF
V
DEBOUNCE
REF
DEBOUNCE
FUNCTIONAL BLOCK DIAGRAMS
ADM6316
ADM6320
RESET
Push-pull
No
Push-pull
Push-pull
Open-drain
Open-drain
Open-drain
GND
©2004–2007 Analog Devices, Inc. All rights reserved.
GND
GENERATOR
GENERATOR
RESET
RESET
WATCHDOG
Figure 1.
Figure 2.
DETECTOR
WATCHDOG
Output Stage
DETECTOR
WDI
WDI
RESET
No
Push-pull
Push-pull
Push-pull
No
Push-pull
Push-pull
V
www.analog.com
CC
RESET
RESET

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adm6318cy29arjz-r7 Summary of contents

Page 1

... No No Push-pull Yes Push-pull Yes Open-drain No Open-drain Yes Open-drain One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 ©2004–2007 Analog Devices, Inc. All rights reserved RESET RESET GENERATOR WATCHDOG DETECTOR WDI Figure 1. RESET RESET GENERATOR WATCHDOG DETECTOR WDI Figure 2 ...

Page 2

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagrams............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Typical Performance Characteristics ...

Page 3

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 SPECIFICATIONS V = full operating range MIN Table 2. Parameter SUPPLY V Operating Voltage Range CC Supply Current RESET THRESHOLD VOLTAGE RESET THRESHOLD TEMPERATURE COEFFICIENT RESET THRESHOLD HYSTERESIS RESET TIMEOUT PERIOD ADM63xxA ...

Page 4

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Parameter MANUAL RESET INPUT (ADM6316, ADM6317, ADM6319, ADM6320, ADM6322) MR Input Threshold MR Input Pulse Width MR Glitch Rejection MR Pull-Up Resistance MR to Reset Delay Min Typ Max 0.8 2.0 0.3 × V 0.7 × ...

Page 5

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter V CC RESET (ADM6320, ADM6321, ADM6322) All Other Pins Output Current (RESET, RESET ) Operating Temperature Range Storage Temperature Range θ Thermal Impedance, SOT-23 JA Lead ...

Page 6

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS RESET 1 5 ADM6316/ ADM6320 GND 2 TOP VIEW (Not to Scale Figure 3. ADM6316/ADM6320 Pin Configuration RESET 1 5 ADM6317 TOP VIEW GND 2 (Not to Scale ...

Page 7

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 TYPICAL PERFORMANCE CHARACTERISTICS 10.0 9.5 9.0 8 8.0 7.5 7.0 6.5 6 5.5 CC 5.0 4 4.0 3.5 –40 – TEMPERATURE (°C) Figure 7. Supply Current vs. Temperature ...

Page 8

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 1.20 1.15 1.10 1.05 1.00 0.95 0.90 –40 – TEMPERATURE (°C) Figure 13. Normalized Watchdog Timeout Period vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) 160 RESET OCCURS ABOVE CURVE 140 120 100 V = 4.63V ...

Page 9

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 CIRCUIT DESCRIPTION The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 provide microprocessor supply voltage supervision by controlling the microprocessor’s reset input. Code execution errors are avoided during power-up, power- down, and brownout conditions by asserting a reset signal when the supply voltage is below ...

Page 10

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 APPLICATION INFORMATION WATCHDOG INPUT CURRENT To minimize watchdog input current (and minimize overall power consumption), leave WDI low for the majority of the watchdog timeout period. When driven high, WDI can draw as much as 160 μA. Pulsing WDI ...

Page 11

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 OPTIONS Table 5. Reset Voltage Threshold Options Part No. Min ADM63xxx50 4.925 ADM63xxx49 4.827 ADM63xxx48 4.728 ADM63xxx47 4.630 ADM63xxx46 4.561 ADM63xxx45 4.433 ADM63xxx44 4.314 ADM63xxx43 4.236 ADM63xxx42 4.137 ADM63xxx41 4.039 ADM63xxx40 3.940 ADM63xxx39 3.842 ADM63xxx38 3.743 ADM63xxx37 3.645 ADM63xxx36 ...

Page 12

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Table 8. Standard Models Model Reset Threshold (V) ADM6316DZ26ARJ 2.63 ADM6316CY29ARJ 2.93 ADM6316CY46ARJ 4.63 ADM6316BX46ARJ 4.63 ADM6316DZ31ARJ 3.08 ADM6318CZ28ARJ 2.8 ADM6318CY46ARJ 4.63 ADM6318BX49ARJ 4.90 ADM6319C29ARJ 2.93 ADM6319B31ARJ 3.08 ADM6319C46ARJ 4.63 ADM6320CY29ARJ 2.93 ADM6320CZ29ARJ 2.93 ADM6320CY46ARJ 4.63 ADM6321CY46ARJ 4.63 ADM6322C46ARJ ...

Page 13

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 OUTLINE DIMENSIONS 1.30 1.15 0.90 0.15 MAX RESET TIMEOUT PERIOD A: 1ms (MIN) B: 20ms (MIN) C: 140ms (MIN) D: 1120ms (MIN) ORDERING GUIDE 1, 2 Model Temperature Range ADM6316xxxARJ-RL7 −40°C to +85°C 4 ADM6316xxxARJZ-R7 −40°C to +85°C 4 ...

Page 14

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 NOTES Rev Page ...

Page 15

ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 NOTES Rev Page ...

Page 16

... ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 NOTES ©2004–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04533-0-4/07(C) Rev Page ...

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