U)Sim Interface - Quectel EG915U-EU Manual

4.4. (U)SIM Interface

The (U)SIM interface circuitry meets ETSI requirements. Both 1.8 V and 3.0 V (U)SIM cards are
supported. and USIM2*
Table 14: Pin Definition of (U)SIM Interface
Pin Name
USIM1_VDD
USIM1_DATA
USIM1_CLK
USIM1_RST
USIM1_DET
USIM1_GND
USIM2_VDD
USIM2_DATA
USIM2_CLK
USIM2_RST
USIM2_DET
EG915U-EU module supports (U)SIM card hot-plug via the USIM_DET pin. The function supports rising
edge and falling edge detections. By default, it is disabled, and can be configured via AT+QSIMDET
command. Please refer to document [2] for details about the command.
EG915U-EU_Hardware_Design
function is still under development.
Pin No. I/O
43 PO
45 DIO
46 DO
44 DO
42 DI
47
87 PO
86 IO
84 DO
85 DO
83 DI
Description
(U)SIM1 card power supply
(U)SIM1 card data
(U)SIM1 card clock
(U)SIM1 card reset
(U)SIM1 card hot-plug detect
(U)SIM2 card power supply
(U)SIM2 card data
(U)SIM2 card clock
(U)SIM2 card reset
(U)SIM2 card detect
LTE Standard Module Series
Comment
Either 1.8 V or 3.0 V
(U)SIM card is
supported and can
be identified
automatically by the
module.
1.8 V power domain.
If unused, keep this
pin open
Specified ground for
(U)SIM1 card
Either 1.8 V or 3.0 V
(U)SIM card is
supported and can
be identified
automatically by the
module.
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