Huawei ME906s LTE M.2 - Circuit Recommended for the USIM Card Interface

HUAWEI ME906s LTE M.2 Module
Hardware Guide
Description of the Application Interfaces
Issue 05 (2019-03-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
37
Pin
No.
Pin Name
Pad
Type
Description
Parameter
Min.
(V)
Typ.
(V)
Max.
(V)
Comments
32
USIM_CLK
O
USIM Clock
V
OH
0.7 x
USIM
_PW
R
-
3.3
USIM_P
WR=1.8 V or
3.0 V
V
OL
0
-
0.2 x
USIM
_PW
R
34
USIM_DATA
IO
USIM DATA
V
OH
0.7 x
USIM
_PW
R
-
3.3
USIM_PWR
=1.8 V or 3.0
V
V
OL
0
-
0.2 x
USIM
_PW
R
V
IH
0.7 x
USIM
_PW
R
-
3.3
V
IL
0
-
0.2 x
USIM
_PW
R
36
USIM_PWR
P
USIM POWER
-
1.75
1.8
1.98
USIM_PWR
=1.8 V
-
2.75
3
3.3
USIM_PWR
=3.0 V
66
USIM_DET
I
USIM hot swap
detection pin.
Rising edge for
insertion; falling
edge for removal.
When it is High,
USIM is present.
When it is Low,
USIM is absent.
V
IH
1.26
1.8
2.1
The module
is pulled up
inside.
V
IL
–0.3
-
0.3
3.6.2 Circuit Recommended for the USIM Card Interface
As the ME906s module is not equipped with a USIM socket, you need to place a
USIM socket on the user interface board. Figure 3-22 shows the circuit of the USIM
card interface.