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.
36
Figure 3-21
USB D+ and 3.3V power on timing sequence
Parameter Remarks
Time (Nominal value)
Unit
T
pd
Power valid to USB D+ high
6
s
The layout design of this circuit on the host board should comply with the USB 2.0 high speed
protocol, with differential characteristic impedance of
90 Ω.
3.6 USIM Card Interface
3.6.1
Overview
The ME906s module provides a USIM card interface complying with the ISO 7816-3
standard and supports both 1.8 V and 3.0 V USIM cards.
Table 3-10
USIM card interface signals
Pin
No. Pin Name
Pad
Type
Description
Parameter
Min.
(V)
Typ.
(V)
Max.
(V)
Comments
30
USIM_RESET
O
USIM Reset
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
3.3V
Power_On_Off
USB D+
T
pd