Quectel EG915U-EU - (U)SIM Interface

LTE Standard Module Series
EG915U-EU_Hardware_Design 43 / 81
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* function is still under development.
Table 14: Pin Definition of (U)SIM Interface
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.
Pin Name
Pin No.
I/O
Description
Comment
USIM1_VDD
43
PO
(U)SIM1 card power supply
Either 1.8 V or 3.0 V
(U)SIM card is
supported and can
be identified
automatically by the
module.
USIM1_DATA
45
DIO
(U)SIM1 card data
USIM1_CLK
46
DO
(U)SIM1 card clock
USIM1_RST
44
DO
(U)SIM1 card reset
USIM1_DET
42
DI
(U)SIM1 card hot-plug detect
1.8 V power domain.
If unused, keep this
pin open
USIM1_GND
47
Specified ground for
(U)SIM1 card
USIM2_VDD
87
PO
(U)SIM2 card power supply
Either 1.8 V or 3.0 V
(U)SIM card is
supported and can
be identified
automatically by the
module.
USIM2_DATA
86
IO
(U)SIM2 card data
USIM2_CLK
84
DO
(U)SIM2 card clock
USIM2_RST
85
DO
(U)SIM2 card reset
USIM2_DET
83
DI
(U)SIM2 card detect