SimCom SIM5300E

SIM5300E_Hardware_Design_V1.02
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MODULE
SMF05C
USIM_VDD
USIM_CLK
USIM_DATA
USIM_RST
USIM_DET
VCC GND
RST VPP
CLK I/O
PRESENCE GND
10K
51R
51R
51R
100nF
VDD_EXT
MOLEX-91228
USIM
CARD
22pF
22pF 22pF
Figure 28: Reference circuit of the 8-pin USIM card holder
The USIM_DET pin is used for detection of the USIM card hot plug in. User can select the 8-pin USIM card
holder to implement USIM card detection function. AT command “AT+CSDT” is used to enable or disable
USIM card detection function. For details of this AT command, please refer to document [1].
If the USIM card detection function is not used, user can keep the USIM_DET pin open. The reference circuit
of 6-pin USIM card holder is illustrated in the following figure.
MODULE
SMF05C
USIM_VDD
USIM_CLK
USIM_DATA
USIM_RST
22pF
VCC GND
RST VPP
CLK I/O
51R
51R
51R
100nF
C707 10M006 5122
USIM
CARD
22pF22pF
Figure 29: Reference circuit of the 6-pin USIM card holder
4.8.2 Design Considerations for USIM Card Holder
For 6-pin USIM card holder, SIMCom recommends to use Amphenol C707 10M006 5122. User can
visithttp://www.amphenol.com for more information about the holder.