Smart Machine Smart Decision
SIM800C_Hardware_Design_V1.02
34
2015-4-27
Figure 33: Amphenol C707 10M006 512 SIM card holder
Table 17: Pin description (Amphenol 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
C5
GND
Connect to GND
C6
VPP
Not connect
C7
SIM_DATA
SIM card data I/O
Note: Every time plug SIM card interval advice is greater than 2s. Otherwise may not be able to correct
detection.
4.9.
ADC
Table 18: Pin definition of the ADC
SIM800C provides an auxiliary ADC, which can be used to measure the voltage. Customer can use AT command
“AT+CADC” to read the voltage value. For details of this AT command, please refer to
document [1]
.
Pin name
Pin number
Description
ADC
38
Analog voltage input
