UMTS/HSPA+ Module Series
UC200A-GL_Hardware_Design 38 / 78
The module supports (U)SIM card hot-plug via the USIM_DET pin, the function supports low-level and
high-level detections. By default, it is disabled, and can be configured via
AT+QSIMDET
. Refer to
for details about the command.
The reference circuit of the 8-pin (U)SIM interface is as follows.
Module
USIM_VDD
USIM_GND
USIM_RST
USIM_CLK
USIM_DATA
USIM_DET
0R
0R
0R
VDD_EXT
51K
100 nF
GND
GND
33 pF
33 pF 33 pF
VCC
RST
CLK
IO
VPP
GND
GND
USIM_VDD
15K
(U)SIM Card Connector
Figure 19: Reference Circuit of (U)SIM Interface with an 8-pin (U)SIM Card Connector
USIM_DATA
15
DIO
(U)SIM card data
card is supported and can
be identified automatically
by the module.
USIM_CLK
16
DO
(U)SIM card clock
USIM_RST
17
DO
(U)SIM card reset
USIM_DET
13
DI
(U)SIM card hot-plug detect
1.8 V power domain.
If unused, keep it open.