Table18: Pin Description (Molex Sim Card Holder) - SimCom SIM900D Hardware Design

SIM900D Hardware Design
Table 18 : Pin description (Molex SIM card holder)
Pin Name Signal
SIM_VDD
C1
SIM_RST
C2
SIM_CLK
C3
GND
C4
GND
C5
VPP
C6
SIM_DATA
C7
SIM_PRESENCE Detect SIM Card Presence
C8
SIM900D_Hardware Design_V1.04
Figure28: Molex 91228 SIM card holder
Description
SIM Card Power supply, it can identify automatically the SIM Card power
mode，one is 3.0V±10%, another is 1.8V±10%. Current is about 10mA.
SIM Card Reset
SIM Card Clock
Connect to GND
Connect to GND
Not connect
SIM Card data I/O
47
2010.10.09