SI7013EVB-UDP-M3L1 Datasheet, PDF (5/26 Pages) Silicon Laboratories – Si7013EVB-UDP-M3L1 Users Guide

Si7013EVB-UDP-M3L1
2.3. Extending Battery Life
The data logger demo will work for several days on a fresh battery once disconnected from the PC. At the default
sample rate of once per two minutes, the 8192 point storage buffer will fill at about 11.4 days; so, generally, the
buffer will not fill before the battery runs out.
In a real application where it might be desirable to extend battery life and record data for longer time periods, the
following steps are recommended:
1. Reduce the interval between samples so the buffer will not fill during the time period desired.
2. Although powered down, the USB interface and level translators (U4 and U5 of the SiM3L1xx MCU Card
with Multiplexed LCD MCU) consume power and are not needed in operation. (See Figure 12 of the
SiM3L1xx LCD User’s Guide.) These can be disconnected from the power supply except when the data
log is being read or configured.
Rev. 0.2
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