Huawei MG323 Circuit Recommended for the SIM Card Interface, Pin No, Signal Name, Description

HUAWEI MG323 GSM M2M Module
Hardware Guide				Description of the Application Interfaces
	Pin No.	Signal Name	I/O	Description
	11	GND	-	Ground signal of the SIM card

3.7.2Circuit Recommended for the SIM Card Interface

As the MG323 module is not equipped with a SIM card socket, you need to place a SIM card socket on the user interface board. The SIM card signals are transmitted outwards through the 50-pin B2B connector interface. Figure 3-11shows the circuit of the SIM card interface.

Figure 3-11Circuit of the SIM card interface

ESD protection

HUAWEI Module (Modem)

VSIM

SIM_RST

SIM_CLK

SIM_DATA

GND

SIM Card

Socket

33 pF 33 pF

0.1µF 33 pF

Issue 06 (2013-06-13)	Huawei Proprietary and Confidential	26
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