View ds1232 datasheet:

DS1232 MicroMonitor Chip www.dalsemi.com FEATURES PIN ASSIGNMENT Halts and restarts an out-of-control PBRST 1 8 VCC microprocessor TD 2 ST 7 Holds microprocessor in check during power transients 3 RST TOL 6 Automatically restarts microprocessor after RST GND 4 5 power failure Monitors pushbutton for external override DS1232 8-Pin DIP (300-mil) Accurate 5% or 10% microprocessor power See Mech. Drawings Section supply monitoring Eliminates the need for discrete components NC 1 16 NC PBRST 2 15 VCC Space-saving, 8-pin mini-DIP NC 3 14 NC Optional 16-pin SOIC surface mount package TD 4 13 ST Industrial temperature -40°C to +85°C NC 5 12 NC available, designated N TOL 6 11 RST NC 7 10 NC GND 8 9 RST DS1232S 16-Pin SOIC (300-mil) See Mech. Drawings Sect