Design Considerations For Sim Card Holder - SimCom SIM900D Hardware Design

SIM900D Hardware Design
If user don not use the SIM card detection function, user can leave the KBR0 pin open. The reference circuit about
6-pin SIM card holder is illustrated as following figure.
MODULE

3.11.2 Design Considerations for SIM Card Holder

For 6-pin SIM card holder, SIMCom recommends to use Amphenol C707 10M006 512 2 .User can visit
http://www.amphenol.com
SIM900D_Hardware Design_V1.04
Figure25: Reference circuit of the 8-pin SIM card holder
SIM_VDD
SIM_RST
SIM_CLK
SIM_DATA
Figure26: Reference circuit of the 6-pin SIM card holder
for more information about the holder.
100nF
22R
22R
C707 10M006 512 2
22R
SMF05C
45
SIM
CARD
VCC GND
RST VPP
CLK I/O
2010.10.09