Quectel MC60 Series Hardware Design page 73

If (U)SIM1 card insertion detection function is not used, keep pin SIM1_PRESENCE unconnected. A
reference circuit for (U)SIM1 card interface with a 6-pin (U)SIM card connector is illustrated in the following
figure.
SIM_GND
SIM1_VDD
SIM1_RST
Module
SIM1_CLK
SIM1_PRESENCE
SIM1_DATA
Figure 41: Reference Circuit for (U)SIM1 Card Interface with a 6-Pin (U)SIM Card Connector
The following figure shows a reference design for (U)SIM2 card interface with a 6-pin (U)SIM card
connector.
SIM_GND
SIM2_VDD
SIM2_RST
Module
SIM2_CLK
SIM2_DATA
Figure 42: Reference Circuit for (U)SIM2 Card Interface with a 6-Pin (U)SIM Card Connector
In order to enhance the reliability and availability of the (U)SIM card in applications, please follow the
criteria below in (U)SIM circuit design:

Keep layout of (U)SIM card as close to the module as possible. Keep the trace length as less than
MC60_Series_Hardware_Design
100nF
22R
22R
22R
33pF 33pF 33pF 33pF
GND
100nF
22R
22R
22R
33pF 33pF 33pF 33pF
GND
Confidential / Released
GSM/GPRS/GNSS Module Series
MC60 Series Hardware Design
(U)SIM Card Connector
VCC
RST
CLK
TVS
GND
(U)SIM Card Connector
VCC
RST
CLK
TVS
GND
GND
VPP
IO
GND
VPP
IO
72 / 114