DS1832

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 ...