DS1232+ Dallas Semiconductor, DS1232+ Datasheet

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DS1232+

Manufacturer Part Number
DS1232+
Description
uP Supervisor, 4.75 or 4.5 V Monitor, Watchdog Timer, DIP8
Manufacturer
Dallas Semiconductor
Type
Monitor Chipr
Datasheet

Specifications of DS1232+

Current, Output
-10 mA (High), +10 mA (Low)
Current, Supply
0.5 mA
Package Type
PDIP
Temperature, Operating, Range
0 to +70 °C
Time, Fall
300 μs
Voltage, Input
5.8 V (High), 0.8 V (Low)
Voltage, Output, High
5.4 V
Voltage, Output, Low
0.4 V
Voltage, Supply
5 V
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
Maxim
Description
The DS1232 MicroMonitor™ Chip monitors three vital conditions for a microprocessor: power supply, software execution, and external override. First, a
precision temperature-compensated reference and comparator circuit monitors the status of V
power fail signal is generated which forces reset to the active state. When V
state for a minimum of 250ms to allow the power supply and processor to stabilize.
Key Features
Key Specifications: Supervisors (1 Monitored Voltage)
Part Number
DS1232
>
Halts and restarts an out-of-control microprocessor
Holds microprocessor in check during power transients
Automatically restarts microprocessor after power failure
Monitors pushbutton for external override
Accurate 5% or 10% microprocessor power supply monitoring
Eliminates the need for discrete components
Space-saving, 8-pin mini-DIP
Optional 16-pin SOIC surface mount package
Industrial temperature -40°C to +85°C available, designated N
Products
Reset Threshold
>
Range (V)
3.3 to 5.5
[Supervisors, Voltage Monitors,
Low Reset
Open Drain
Active-
Output
High Reset
Push-Pull
Active-
Output
Sequencers]
Min. Reset
Timeout
85ms to
Range
300ms
MicroMonitor Chip
DS1232
Watchdog
Input (WDI)
Feature
CC
returns to an in-tolerance condition, the reset signals are kept in the active
Nom. Watchdog
Timeout Range
1s to 2s
<1s
CC
. When an out-of-tolerance condition occurs, an internal
Manual Reset
Supervisor
Features
Thresh. Acc.
(% @+25°C)
Reset
2.5
Max. I
2000
(µA)
CC

Related parts for DS1232+

DS1232+ Summary of contents

Page 1

Maxim > Products > [Supervisors, Voltage Monitors, Description The DS1232 MicroMonitor™ Chip monitors three vital conditions for a microprocessor: power supply, software execution, and external override. First, a precision temperature-compensated reference and comparator circuit monitors the status of V power ...

Page 2

... Application Notes Application Note 279: Supervisory Circuits Keep Your Microprocessor Under Control Application Note 581: Advantages of Using a MicroMonitor and a Simple Application Demonstrating the Use of a DS1232 DS1232 Application Note 3316: Dallas Semiconductor Microprocessor Supervisor Selection Guide Evaluation Kits none Reliability Reports Reliability Report: DS1232 ...

Page 3

... DS1232 IBM CAT I DS1232 DS1232+ DS1232N DS1232N+ DS1232S/T&R/C05 DS1232S+T&R T&R Qty 1000/Reel DS1232S/T&R T&R Qty 1000/Reel DS1232S+ DS1232S DS1232SN/T&R T&R Qty 1000/Reel DS1232SN DS1232SN+ PDIP;8 pin; 0°C to +70°C Dwg: 21-0043 (PDF) Use pkgcode/variation: P8-1* PDIP;8 pin; 0°C to +70°C Dwg: ...

Page 4

... When V condition, the reset signals are kept in the active state for a minimum of 250 ms to allow the power supply and processor to stabilize. MicroMonitor is a trademark of Dallas Semiconductor. MicroMonitor Chip PIN ASSIGNMENT PBRST ...

Page 5

The second function the DS1232 performs is pushbutton reset control. The DS1232 debounces the pushbutton input and guarantees an active reset pulse width of 250 ms minimum. The third function is a watchdog timer. The DS1232 has an internal timer ...

Page 6

ABSOLUTE MAXIMUM RATINGS* Voltage Pin Relative to Ground Voltage on I/O Relative to Ground Operating Temperature Operating Temperature (Industrial Version) Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device ...

Page 7

AC ELECTRICAL CHARACTERISTICS PARAMETER = V PBRST IL RESET Active Time Pulse Width ST V Fail Detect to RST and RST CC V Slew Rate 4.75V to 4.25V CC V Detect to RST and RST CC V Slew Rate 4.25V ...

Page 8

...

Page 9

TOP VIEW FRONT VIEW H C 0° -8° L SIDE VIEW INCHES MILLIMETERS DIM MIN MAX MIN MAX A 0.093 0.104 2.35 2.65 A1 0.004 0.012 0.10 0.30 B 0.014 0.019 0.35 ...

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