Формирователи импульса сброса DS1232LPS-2+

Схема контроля микропроцессора , активный высокий, выход сброса с активным низким, 4.5В-5.5В (Vin)

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

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