View ds1232lp datasheet:

DS1232LP/LPS Low Power MicroMonitor Chip www.dalsemi.com FEATURES PIN ASSIGNMENT Super-low power version of DS1232 PBRST 1 8 VCC NC 1 16 NC 50 µA quiescent current PBRST 2 15 VCC TD ST 2 7 Halts and restarts an out-of-control NC 3 14 NC RST microprocessor 3 6 TOL TD 4 13 ST Automatically restarts microprocessor after NC 5 12 NC RST GND 4 5 power failure TOL 6 11 RST Monitors pushbutton for external override DS1232LP 8-Pin DIP (300-mil) NC 7 10 NC See Mech. Drawings Section Accurate 5% or 10% microprocessor power GND 8 9 RST supply monitoring DS1232LPS 16-Pin SOIC (300-mil) 8-pin DIP, 8-pin SOIC or space saving µ-SOP See Mech. Drawings Section package available Optional 16-pin SOIC package available PBRST 1 8 VCC PBRST 1 8 VCC Industrial tempera