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ADM1232ARM

P1-P3P4-P6P7-P9P10-P12P13-P13
Microprocessor
Supervisory Circuit
ADM1232
Rev. C
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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.
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Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©1997–2008 Analog Devices, Inc. All rights reserved.
FEATURES
Pin-compatible with MAX1232 and Dallas DS1232
Adjustable precision voltage monitor with 4.5 V and
4.75 V options
Adjustable strobe monitor with 150 ms, 600 ms, or
1.2 sec options
No external components
Specified from −40°C to +85°C
APPLICATIONS
Microprocessor systems
Portable equipment
Computers
Controllers
Intelligent instruments
Automotive systems
FUNCTIONAL BLOCK DIAGRAM
V
CC
T
OLERANCE
PB RESET
TD
5%/10%
TOLERANCE
SELECT
RESET
GENERATOR
RESET
GND
DEBOUNCE
VREF
RESET
WATCHDOG
TIMER
WATCHDOG
TIME-BASE
SELECT
STROBE
7522-001
ADM1232
0
Figure 1.
GENERAL DESCRIPTION
The ADM1232 is pin-compatible with the MAX1232, DS1232LP,
and DS1232. The Analog Devices, Inc., ADM1232 is a micro-
processor monitoring circuit that can monitor the following:
• Microprocessor supply voltage
• Whether a microprocessor has locked up
• External interrupts
The ADM1232 is available in four packages: an 8-lead MSOP
(RM-8), an 8-lead PDIP (N-8), a 16-lead wide SOIC (RW-16),
and an 8-lead narrow SOIC (R-8).
MICROPROCESSOR
GND TD TOLERANCE
RESET
STROBE
RESET
I/O
ADM1232
5
V
5
V
10kΩ
07522-002
Figure 2. Typical Supply Monitoring Application
ADM1232* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
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DOCUMENTATION
Data Sheet
• ADM1232: Microprocessor Supervisory Circuit Data Sheet
REFERENCE MATERIALS
Product Selection Guide
• Supervisory Devices Complementary Parts Guide for
Altera FPGAs
• Supervisory Devices Complementary Parts Guide for
Xilinx FPGAs
Solutions Bulletins & Brochures
• Voltage Monitoring Products Applications Guide
DESIGN RESOURCES
• ADM1232 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
DISCUSSIONS
View all ADM1232 EngineerZone Discussions.
SAMPLE AND BUY
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TECHNICAL SUPPORT
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number.
DOCUMENT FEEDBACK
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ADM1232
Rev. C | Page 2 of 12
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 4
Thermal Resistance ...................................................................... 4
ESD Caution .................................................................................. 4
Pin Configurations and Function Descriptions ............................5
Circuit Information ...........................................................................6
PB RESET
.......................................................................................6
STROBE
Timeout Selection .........................................................6
Tolerance ........................................................................................6
RESET and
RESET
Outputs .........................................................6
Outline Dimensions ..........................................................................7
Ordering Guide .............................................................................9
REVISION HISTORY
12/08—Rev. B to Rev. C
Updated Format .................................................................. Universal
Changes to Table 2 ............................................................................ 4
Added Thermal Resistance Section ............................................... 4
Updated Outline Dimensions ......................................................... 7
Changes to Ordering Guide ............................................................ 9
12/97—Rev. A to Rev. B
Changes to Specifications Section .................................................. 2
x/97—Rev. 0 to Rev. A
Changes to Specifications Section .................................................. 2
7/97—Revision 0: Initial Version
P1-P3P4-P6P7-P9P10-P12P13-P13

ADM1232ARM

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Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits RESET GENERATOR I.C.
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