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SimCom SIM900 Hardware Design

SimCom SIM900
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SIM900 Hardware Design
If you don’t use the SIM card detection function, you can leave the SIM_PRESENCE pin open. The reference
circuit about 6 pins SIM card illustrates as following figure.
MODULE
SMF05C
SIM_VDD
SIM_CLK
SIM_DATA
SIM_RST
22pF
VCC GND
RST VPP
CLK I/O
22R
22R
22R
100nF
C707 10M006 512 2
SIM
CARD
Figure 28: Reference circuit of the 6 pins SIM card
3.10.2 Design Considerations for SIM Card Holder
For 6 pins SIM card holder, we recommend to use Amphenol C707 10M006 512 2 .You can visit
http://www.amphenol.com
for more information about the holder.
Figure 29: Amphenol C707 10M006 512 2 SIM card holder
Table
13: Pin description (Amphenol SIM card holder)
SIM900_HD_V1.05 06.23.2010
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SimCom SIM900 Specifications

General IconGeneral
BrandSimCom
ModelSIM900
CategoryModem
LanguageEnglish