Shanghai SIMCom Wireless Solutions Limited SIM7000A ユーザーズマニュアル
Smart Machine Smart Decision
SIM7000 _Hardware Design _V1.00
2017-05-23
Note: SIM_DATA has been pulled up with a 10KΩ resistor to SIM_VDD in module. A 100nF
capacitor on SIM_VDD is used to reduce interference. For more details of AT commands about
SIM, please refer to document [1].SIM_CLK is very important signal, the rise time and fall time
of SIM_CLK should be less than 40ns, otherwise the SIM card might not be initialized correctly.
If SIM_DET is used, a 10KΩ resistor is necessary to pulling up to the power VDD_EXT.
capacitor on SIM_VDD is used to reduce interference. For more details of AT commands about
SIM, please refer to document [1].SIM_CLK is very important signal, the rise time and fall time
of SIM_CLK should be less than 40ns, otherwise the SIM card might not be initialized correctly.
If SIM_DET is used, a 10KΩ resistor is necessary to pulling up to the power VDD_EXT.
3.5.2
Recommended SIM Card Holder
It is recommended to use the 6-pin SIM socket such as C707 10M006 512 produced by Amphenol.
User can visit http://www.amphenol.com for more information about the holder.
User can visit http://www.amphenol.com for more information about the holder.
Figure 20: Amphenol SIM card socket
Table 13: Amphenol SIM socket pin description
Pin
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
C7
SIM_DATA
SIM Card data I/O.