User Manual

Smart Machine Smart Decision
SIM7100_Hardware_Design_V1.02 2015-06-16
Figure 21: USIM interface reference circuit
Note: USIM_DATA has been pulled up with a 20KΩ resistor to USIM_VDD in module. A 220nF
capacitor on USIM_VDD is used to reduce interference. For more details of AT commands about
USIM, please refer to document [1].
3.5.2 Recommended USIM Card Holder
It is recommended to use the 6-pin USIM socket such as C707 10M006 512 produced by
Amphenol. User can visit http://www.amphenol.com for more information about the holder.
Figure 22: Amphenol SIM card socket