Quectel SG560D Series Hardware Design page 62

USIM1_DET
USIM2_VDD
USIM2_DATA
USIM2_CLK
USIM2_RST
USIM2_DET
SG560D_Series_Hardware_Design
159 DI
172 PO
169 DIO
168 DO
166 DO
163 DI
(U)SIM1 card hot-swap
detect
(U)SIM2 card power supply
(U)SIM2 card data
(U)SIM2 card clock
(U)SIM2 card reset
(U)SIM2 card detect
Smart Module Series
Active low.
Pull it up to 1.8 V
externally.
If not used, keep it
unconnected.
Disabled by default,
and can be enabled
via software
configuration.
Either 1.8 V or 2.95 V
(U)SIM card is
supported and can be
identified
automatically by the
module.
When using it, it is
recommended to add
bypass capacitors
with a total
capacitance not
exceeding 3 μF.
Pull it up to
USIM2_VDD with an
external 20 kΩ
resistor.
Active low.
Pull it up to 1.8 V
externally.
If not used, keep it
unconnected.
Disabled by default,
and can be enabled
via software
configuration.
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