AMIS-70020 Description
The AMIS-70020 is a timer IC that measures the duration of power failures of up to five hours. The AMIS-70020 starts and stops counting automatically as it is triggered by the voltage of the input signal VCC. When VCC gets lower than the reference signal VDD - VTH, a power cut-off is flagged and the AMIS-70020 starts counting.
AMIS-70020 Key Features
- Measures the time elapsed during a power failure
- Measures up to five hours
- 1 second resolution (RC oscillator/1024)
- Autonomous operation during power failure
- Auto switching to backup power
- Auto counter-start/stop function
- Maintenance free buffer capacitor
- 6 hours back-up with 10mF
- Capacitor recharge management built in (no external diode needed)
- Li-button cell