U)Sim Interfaces - Quectel SC200R Series Hardware Design

The following figure is an example of connection between the module and PC. It is recommended to add
a level translator and an RS-232 level translator chip between the module and PC. The following figure
shows the reference design.
1.8 V
UART5_TXD
UART5_RTS
UART5_RXD UART5_RXD
UART5_CTS
GND
Module
NOTE
UART2 and UART1 are similar to UART5. For the reference design, refer to that of UART5.

3.11. (U)SIM Interfaces

SC200R series module provides two (U)SIM interfaces that meet ETSI and IMT-2000 requirements. Dual
SIM Dual Standby is supported by default. Either 1.8 V or 2.95 V (U)SIM card is supported, and the
(U)SIM card is powered by the internal power supply of the module.
Table 15: Pin Definition of (U)SIM Interfaces
Pin Name Pin No.
USIM2_DET 17
SC200R&SC262R_Series_Hardware_Design
OE
VCCA VCCB
TXD_3.3V
TXD_1.8V
RTS_1.8V RTS_3.3V
RXD_1.8V RXD_3.3V
CTS_1.8V CTS_3.3V
GND
Figure 14: RS-232 Level Match Circuit (for UART5)
I/O Description
DI (U)SIM2 card hot-plug detect
3.3 V
VCC
DIN1 DOUT1
DIN2 DOUT2
DIN3 DOUT3
DIN4 DOUT4
DIN5 DOUT5
R1OUTB
ROUT1
ROUT2
ROUT3
FORCEON
/INVALID
3.3 V
/FORCEOFF
Smart Module Series
GND GND
RXD
CTS
TXD
RIN1
RIN2
RTS
RIN3
DB-9
Comment
Active low.
Externally pull it up to 1.8 V.
If it is not used, keep it open.
This function is disabled by
default via software.
Cannot be multiplexed into a
generic GPIO.
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