Huawei ME909 Series - USIM Card Interface; Overview; Circuit Recommended for the USIM Card Interface

HUAWEI ME909 Series LTE LGA Module
Hardware Guide
Description of the Application Interfaces
Issue V0.3 (2013-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
34
3.7 USIM Card Interface
3.7.1 Overview
The ME909 module provides a USIM card interface complying with the ISO 7816-3
standard and supports both Class B and Class C USIM cards.
Table 3-9 USIM card interface signals
Pin
No.
Pin Name
I/O
Description
DC Characteristics (V)
Min.
Typ.
Max.
88
SIM_RESET
O
USIM card reset
-
1.8/2.85
-
90
SIM_CLK
O
USIM card clock
-
1.8/2.85
-
89
SIM_DATA
I/O
USIM card data
-
1.8/2.85
-
34
SIM_VCC
P
Power supply for
USIM card
-
1.8/2.85
-
3.7.2 Circuit Recommended for the USIM Card Interface
As the ME909 module is not equipped with an USIM socket, you need to place an
USIM socket on the user interface board.
Figure 3-15 shows the circuit of the USIM card interface.
Figure 3-15 Circuit of the USIM card interface