Smart Module Series
SC200L_Series(Dual-band Wi-Fi)_Hardware_Design 45 / 111
The module supports (U)SIM card hot-plug function through USIM_DET (The function is enabled by
default through software configuration). A reference circuit for (U)SIM interface with an 8-pin (U)SIM card
connector is shown below.
USIM_ VDD
USIM_ RST
USIM_ CLK
USIM_ DATA
USIM_ DET
22 R
1
μF
USIM Card Connector
ESD
22 pF
VCC
RST
CLK
IO
VPP
GND
Module
C1
22 pF
22 pF
C2
C3
C4
D1
22 R
22 R
R1
R2
R3
NM-10K
R4
GND
Figure 17: Reference Circuit for (U)SIM Interface with an 8-pin (U)SIM Card Connector
If USIM_DET is not used, keep it open. The following is a reference circuit for (U)SIM interface with a
6-pin (U)SIM card connector.
Module
USIM_ VDD
USIM_ RST
USIM_ CLK
USIM_ DATA
22 R
22 R
22 R
1
μF
ESD
22 pF
VCC
RST
CLK
IO
VPP
GND
22 pF
22 pF
C1
D1
R2
R3
R4
C2
C3
C4
USIM_ DET
USIM Card Connector
NM-10K
R1
GND
Figure 18: Reference Circuit for (U)SIM Interface with a 6-pin (U)SIM Card Connector
USIM1_RST
23
DO
(U)SIM1 card reset
USIM1_CLK
24
DO
(U)SIM1 card clock
USIM1_DATA
25
DIO
(U)SIM1 card data
USIM1_VDD
26
PO
(U)SIM1 card power
supply
Either 1.8 V or 2.95 V (U)SIM card
is supported.