Maxim Integrated (DS1232LPS-2+) Microprocessor Supervisory Circuit

Microprocessor Supervisory Circuit, Active-High, Active-Low Reset, 4.5V-5.5Vin, SOIC-8 Product Overview The DS1232LPS-2+ is a low-power MicroMonitor Chip features halts and restarts an out-of-control microprocessor and automatically restarts microprocessor after power failure. The DS1232LPS low-power MicroMonitor chip monitors three vital conditions for a microprocessor of 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. The second function the DS1232 performs is pushbutton reset control. The third function is a watchdog timer. The DS1232 has an internal timer that forces the reset signals to the active state if the strobe input is not driven low prior to timeout. Monitors pushbutton for external override Accurate 5 or 10% microprocessor power supply monitoring 50µA Quiescent current System Monitoring Applications Power Management Product Information Threshold Voltage: 4.37V No. of Supervisors / Monitors: 1Monitors Supply Voltage Min: 4.5V Supply Voltage Max: 5.5V Reset Type: Active-High, Active-Low Digital IC Case: SOIC No. of Pins: 8Pins Delay Time: 610ms Operating Temperature Min: 0°C Operating Temperature Max: 70°C MSL: MSL 1 - Unlimited