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.
18
I
indicates pins for digital signal input;
O
indicates pins for digital signal output;
PI
indicates
power input pins;
PO
indicates power output pins.
V
IL:
Low-level Input voltage;
V
IH:
High-level Input voltage;
V
OL:
Low-level Output voltage;
V
OH:
High-level Output voltage.
The
NC
pins are not connected, therefore, before you deal with these pins, please refer to
the corresponding hardware guide.
The
Reserved
pins are internally connected to the module. Therefore, these pins should
not be used, otherwise they may cause problems. Please contact with us for more details
about this information.
3.3 Power Interface
3.3.1
Overview
The power supply part of the ME936 module contains:
3.3V pins for the power supply
UIM_PWR pin for USIM card power output
Table 3-2 lists the definitions of the pins on the power supply interface.
Table 3-2
Definitions of the pins on the power supply interface
Pin No.
Pin Name
Pad
Type
Description
Parameter
Min.(
V)
Typ.(
V)
Max.(
V)
Comments
2, 4, 70, 72, 74
3.3V
PI
Power supply for
ME936, 3.3 V is
recommended
-
3.135
3.3
4.4
-
36
UIM_PWR
P
USIM POWER
-
1.75
1.8
1.98
UIM_PWR
=1.8 V
-
2.75
2.85
3.3
UIM_PWR
=2.85 V
3, 5, 11, 27,
33, 39, 45, 51,
57, 71, 73
Ground
PI
Ground
-
-
0
-
-
3.3.2
Power Supply 3.3V Interface
When the ME936 module works normally, power is supplied through the 3.3V pins
and the voltage ranges from 3.135 V to 4.4 V (typical value is 3.3 V). The ME936
provides 5 power pins, and 11 Ground pins. To ensure that the ME936 module works
normally, all these pins must be connected. The M.2 connector pin is defined to
support 500 mA/Pin continuously.
When the ME936 module works at GSM mode, the module transmits at the
maximum power, the transient peak current may reach 2.5 A (with a highly
