Measuring Av Dd Current Consumption; Measuring Rtcv Dd Current Consumption - Epson S5U1C17801T1100 Hardware Manual

Appendix A HOW TO MEASURE CURRENT CONSUMPTION
until being reset.
When this circuit is actually used for your circuit, a proper pull-down resistance value must be selected because the
value affects the current consumption of total system.
(When R21 = 100KΩ IR21= 33 μA approx., and when R21 = 500KΩ R21 = 6.6 μA approx.)
If you do not use battery backup function, input RTCV
A.2 Measuring AV
Current consumed by the power supply for ADC (AV
Note that sample software (software flow) for measuring the current consumption, the software referred in the
S1C17801 Current Consumption Measurement Application Note does not control the AV
A.3 Measuring RTCV
Current consumed by the power supply for IVRAM and RTC inside battery backup area (RTCV
measured by inserting an ammeter into JP2.
When JP2 is measured between 2-3 pins, the voltage becomes 3.3V because RTCV
generated by regulator. When JP2 is measured between 1-2 pins, on the other hand, the voltage becomes 3.0V
because RTCV is supplied from coin cell battery.
DD
Note that sample software (software flow) for measuring the current consumption, the software referred in the
S1C17801 Current Consumption Measurement Application Note causes approximately 3 to 4 μA current to flow in
the RTCV line.
DD
52
S1C17801
RTC
OSC1
IVRAM
Fig. A.2 #STBY Related Circuit
Current Consumption
DD
DD
Current Consumption
DD
EPSON
to #STBY.
DD
GPIO(P43)
#STBY
R21
(10k )
) can be measured by inserting an ammeter into JP5.
S5U1C17801T1100 HARDWARE MANUAL
(SOFTWARE EVALUATION TOOL FOR S1C17801)
line.
DD
) can be
DD
is supplied from V
DD DD