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LoRaMote
USER GUIDE
WIRELESS, SENSING and TIMING PRODUCTS
6 WiMOD iM880A Energy profile
The figure below shows the power consumption of the WiMOD iM880A module. The code is organized so
that the MCU and all peripherals are in sleep mode most of the time. The purple line shows the current
consumption of the WiMOD across a 100 ohm resistor (R40 on the schematics is a 0 ohm resistor which
can be removed to allow measuring the current).
Tx at SF12
Sensors
Active
RX Window 1
RX Window 2
Figure 5: WiMOD Energy Profile
For details information on the LoRa protocol, it is advised to read the LoRaMAC specifications. The
principal aspect of the protocol is the opening of two reception windows after each transmission.
Revision 2.0 – July 2014
Page 19 of 23
www.semtech.com
©2014 Semtech Corporation
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