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DS1232
MicroMonitor Chip


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Data Sheet
FULL DATA SHEET (PDF, 140kB)
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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 VCC. When an out-of-tolerance condition occurs, an internal power fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signals are kept in the active state for a minimum of 250ms to allow the power supply and processor to stabilize.

Key Features
  • 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

Key Specifications:   Supervisors (1 Monitored Voltage)
Part Number Reset Threshold Range (V) Active-Low Reset Output Active-High Reset Output Min. Reset Timeout Range Watchdog Feature Nom. Watchdog Timeout Range Supervisor Features Reset Thresh. Acc. (% @+25°C) Max. ICC (µA) RoHS Available Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C) Price**
DS1232  3.3 to 5.5 Open Drain Push-Pull 85ms to 300ms Input (WDI) 1s to 2s
<1s
Manual Reset 2.5 2000 Yes PDIP/8
SOIC/16
80 -40 to +85
0 to +70
$1.17 @ 1k
See All Supervisors (1 Monitored Voltage) (268)
Notes:
**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Application Notes
  • Application Note 279: Supervisory Circuits Keep Your Microprocessor Under Control - DS1232
  • 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 - DS1232

    Evaluation Kits
    none

    Reliability Reports
  • Reliability Report: DS1232.pdf

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-19 of 19

    DS1232 Notes Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    DS1232 IBM CAT I  
    PDIP;8 pin;80 mm²
    Dwg: 56-G5005-000A (PDF)
    Use pkgcode/variation: P8-1*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232  
    PDIP;8 pin;80 mm²
    Dwg: 56-G5005-000A (PDF)
    Use pkgcode/variation: P8-1*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232+  
    PDIP;8 pin;80 mm²
    Dwg: 56-G5005-000A (PDF)
    Use pkgcode/variation: P8+1*
    0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1232N+  
    PDIP;8 pin;80 mm²
    Dwg: 56-G5005-000A (PDF)
    Use pkgcode/variation: P8+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1232N  
    PDIP;8 pin;80 mm²
    Dwg: 56-G5005-000A (PDF)
    Use pkgcode/variation: P8-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232S-IBM  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232S/T&R/C01  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232S/T&R/C06  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232S/T&R/C05  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232S/T&R/C11  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232S/T&R/C13  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232S+  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16+11*
    0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1232S+T&R   T&R Qty 1000/Reel
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16+11*
    0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1232S/T&R   T&R Qty 1000/Reel
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232S  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232SN+  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16+3*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1232SN  
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1232SN+T&R   T&R Qty 1000/Reel
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16+11*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1232SN/T&R   T&R Qty 1000/Reel
    SOIC;16 pin;80 mm²
    Dwg: 56-G4009-001B (PDF)
    Use pkgcode/variation: W16-11*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

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    1999-11-18
    This page last modified: 2007-02-01




             


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