3.3 Volt Micromonitor Chip
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DS1832 3.3-Volt MicroMonitor Chip
www.dalsemi.com
FEATURES
Halts and restarts an out-of-control m...
Description
www.DataSheet4U.com
DS1832 3.3-Volt MicroMonitor Chip
www.dalsemi.com
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 10% or 20% microprocessor power monitoring Eliminates need for discrete components 20% tolerance for use with 3.0-volt systems Pin-compatible with the DS1232 Low cost 8-pin DIP, 8-pin SOIC, and space saving µ-SOP packages available Industrial temperature range of -40°C to +85°C
PIN ASSIGNMENT
PBRST TD TOL GND 1 2 3 4 8 7 6 5 VCC ST RST RST
DS1832 8-Pin DIP (300-mil) See Mech. Drawings Section PBRST TD TOL GND 1 2 3 4 8 7 6 5 VCC ST RST RST
DS1832S 8-Pin SOIC (150-mil) See Mech. Drawings Section PBRST TD TOL GND 1 2 3 4 8 7 6 5 VCC ST RST RST
DS1832µ 8-Pin µ-SOP (118-mil) See Mech. Drawings Section
PIN DESCRIPTION
PBRST
TD TOL GND RST
RST ST
VCC
- Pushbutton Reset Input - Time Delay Set - Selects 10% or 20% VCC Detect - Ground - Active High Reset Output - Active Low Reset Output - Strobe Input - Power Supply
DESCRIPTION
The DS1832 3.3-Volt MicroMonitor monitors three vital conditions for a microprocessor: power supply, software execution, and external override. First, a precision temperature-compensated reference and comparator circuit monitor the status of VCC. When an out-of-tolerance condition occurs, an internal power-fail signal is generated which forces the resets to an ...
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