GSM/GPRS/GNSS Module Series
MC60 Series Hardware Design
MC60_Series_Hardware_Design Confidential / Released 71 / 114
1)
If several interfaces share the same I/O pin, to avoid conflict between these alternate functions, only one
peripheral should be enabled at a time.
The following figure shows a reference design for (U)SIM1 card interface with an 8-pin (U)SIM card
connector.
VDD_EXT
Module
22R
22R
22R
10K
100nF
GND
GND
TVS
33pF
33pF 33pF 33pF
VCC
RST
CLK
IO
VPP
GND
GND
(U)SIM Card Connector
SIM_GND
SIM1_VDD
SIM1_RST
SIM1_CLK
SIM1_PRESENCE
SIM1_DATA
Figure 40: Reference Circuit for (U)SIM1 Card Interface with an 8-Pin (U)SIM Card Connector
Maximum supply current is around 10mA.
SIM2_CLK
10
DO
Clock signal of (U)SIM2 card
SIM2_DATA
11
IO
Data signal of (U)SIM2 card
SIM2_RST
12
DO
Reset signal of (U)SIM2 card
NOTE
Quectel
Confidential