AMIS-70020 Datasheet, PDF (3/7 Pages) AMI SEMICONDUCTOR – Power Failure Elapsed Time Counter

AMIS-70020 Power Failure Elapsed Time Counter
6.0 Application Diagram
Supply
5V
100nF
Data Sheet
VCC
10 mF VDD
CUT_OFF
VSS
AMIS-
70020
MICRO
Test
Clk
<
Uc_Clk
>
Q_Out
The power supplies of the chip need to be properly
decoupled. This means that at least one external capacitor
CDD must be connected in between VSS and VCC.
Typical External Components
Component
Capacitor
Capacitor 1
Li Battery 1, 2
Function
Filter
Backup power supply
Backup power supply
Typical Value Tol
100
+- 20%
10
+- 10%
CR1220 (35mAh)
1) Either a buffer capacitor of a Li-battery is
Unit
nF
mF
selected as a backup power supply.
2) In case a Li-battery is used as a backup
power supply a diode is must be placed
between the AMIS-70020 and the battery
to disable the charging feature.
7.0 Electrical and Environmental Ratings
Operating Ranges
This section defines the limits for functional operation and
parametric characteristics of the device as described
elsewhere in this document. Note that functionality of the
IC outside the operating ranges is not guaranteed.
Operation outside the operating ranges for extended
periods may affect device reliability. Total cumulative dwell
time above the maximum operating rating for power supply
or temperature must be less than 100 hours.
Symbol
VCC
VDD
Tamb
Tj
Cla
VIH
VIL
VOH
VOL
Description
Power supply voltage
Power supply voltage
Ambient temperature under bias
Junction temperature
Load capacitance on outputs
Digital input levels
Digital output levels
Min
4.5
2
-10
70% VDD
2.5
Max
Unit
5.5
V
5.5
V
85
°C
135
°C
70
pF
V
30%VDD V
V
0.4
V
Input operating range of digital
IO’s 0-VDD
Output operating range of digital
IO’s 0-VDD
AMI Semiconductor
www.amis.com
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