Design Considerations For Usim Card Holder - SimCom SIM5300E Hardware Design

MODULE
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
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
visit http://www.amphenol.com
SIM5300E_Hardware_Design_V1.02
VDD_EXT
10K
USIM_VDD
51R
USIM_RST
USIM_CLK
51R
USIM_DET
51R
USIM_DATA
22pF
22pF 22pF
SMF05C
USIM_VDD
USIM_RST 51R
USIM_CLK 51R
USIM_DATA 51R
22pF 22pF 22pF
for more information about the holder.
100nF
MOLEX-91228
VCC GND
RST VPP
CLK I/O
PRESENCE GND
USIM
CARD
100nF
USIM
CARD
VCC GND
RST VPP
CLK I/O
C707 10M006 5122
SMF05C
31