SIM340 Hardware Design
SIM340_HD_V3.09
18.03.2009
47
Figure 30: Molex 91228 SIM card holder
Table
17
: Pin description (Molex SIM card holder)
Pin
Signal
Description
C1
SIM_VDD
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.
C2
SIM_RST
SIM Card Reset
C3
SIM_CLK
SIM Card Clock
C4
GND
Connect to GND
C5
GND
Connect to GND
C6
VPP
Not connect
C7
SIM_DATA
SIM Card data I/O
C8
SIM_PRESENCE Detect SIM Card Presence