Smart Machine Smart Decision
SIM800H&SIM800L_Hardware Design_V2.02 40
2015-07-27
Figure 35: Molex 91228 SIM card holder
Table 18: Pin description (Molex SIM card holder)
Pin name
Signal
Description
C1
SIM_VDD
SIM
card power supply
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_DET
Detect SIM
card presence
For 6-pin SIM card holder, SIMCom recommends to use Amphenol C707 10M006 512 .Customer can visit
http://www.amphenol.com
for more information about the holder.
Smart Machine Smart Decision
4.9. PCM Interface
SIM800H&SIM800L provides a hardware PCM interface: