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HUAWEI ME936 LTE M.2 Module
Hardware Guide
Description of the Application Interfaces
Issue 03 (2017-12-11)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
19
unmatched antenna). In this case, the power pin voltage will drop. Make sure that the
voltage does not drop below 3.135 V in any case.
The traces of the power supply should be as short and wide as possible. It is
recommended that at least a 220 µF capacitance is added onto the 3.3 V power rails
and as close to the M.2 connector as possible. Customer can reduce the capacitance
if it can be guaranteed that 3.3V pin does not drop below 3.135 V in any case.
Figure 3-2 shows the recommended power circuit of the ME936 module.
Figure 3-2
Recommended power circuit of the ME936 module
3.3V pin must never be under 3.135 V during the 2G transmitting burst, as shown in Figure 3-
3 .
ME936
3.3V
330pF
100nF
1µF
22µF
220µF
3.3V