AMIS-70020 Datasheet PDF - AMI SEMICONDUCTOR Power Failure Elapsed Time Counter Specs

AMIS-70020 - Power Failure Elapsed Time Counter

Datasheet Summary

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.

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 www. DataSheet4U. com - 6 hours back-up with 10mF - Capacitor recharge management built in (no external diode needed).
Li-button cell - CR1220 (35mAh) supports up to 1.

Datasheet Details

Part number	AMIS-70020
Manufacturer	AMI SEMICONDUCTOR
File Size	365.98 KB
Description	Power Failure Elapsed Time Counter
Datasheet	AMIS-70020 Datasheet
Additional preview pages of the AMIS-70020 datasheet.

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Full PDF Text Transcription

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AMIS-70020 Power Failure Elapsed Time Counter 1.0 General 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. During the counting phase the AMIS-70020 is powered by an external capacitor or by a primary battery and consequently operates independently of an external power supply. Due to the low power design of the AMIS-70020, the device can count the full scale autonomously using the energy stored in a 10mF capacitor. As soon as VCC comes up again counting stops.

Published: Nov 4, 2009 |