U)Sim Interface - Quectel SC200L-EM Hardware Design

following figure shows the reference design.
NOTE
Please note that the CTS and RTS pins of the serial port hardware flow control are directly connected,
and pay attention to the input and output directions.

3.10. (U)SIM Interface

SC200L provides 2 (U)SIM interfaces that meet ETSI and IMT-2000 requirements. Dual SIM Card Dual
Standby is supported by default. Both 1.8V and 2.95V (U)SIM cards are supported, and the (U)SIM card
interfaces are powered by the internal power supply of the SC200L module.
Table 11: Pin Definition of (U)SIM Interfaces
Pin Name
USIM2_DET
USIM2_RST
USIM2_CLK
USIM2_DATA
SC200L_Hardware_Design
Figure 13: RS-232 Level Match Circuit (for UART0)
Pin No I/O Description
(U)SIM2 card plug
17 DI
detection
(U)SIM2 card reset
18 DO
signal
(U)SIM2 card clock
19 DO
signal
(U)SIM2 card data
20 IO
signal
SC200L Hardware Design
Comment
Active Low. If it is not used, keep it
open.Enabled by
software.It can be multiplexed into
a generic GPIO.
It cannot be multiplexed into a
generic GPIO.
It cannot be multiplexed into a
generic GPIO.
It cannot be multiplexed into a
generic GPIO.
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