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LTE Module Series
EG95 Hardware Design
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1. Use RESET_N only when turning off the module by AT+QPOWD command and PWRKEY pin failed.
2.
Ensure that there is no large capacitance on PWRKEY and RESET_N pins.
3.9.
(U)SIM Interfaces
EG95 provides two (U)SIM interfaces, and only one (U)SIM card can work at a time. The (U)SIM 1 and
(U)SIM 2 cards can be switched by AT+QDSIM command. For more details, please refer to document
[2].
The (U)SIM interfaces circuitry meet ETSI and IMT-2000 requirements. Both 1.8V and 3.0V (U)SIM cards
are supported.
Table 9: Pin Definition of (U)SIM Interfaces
Pin Name
Pin No.
I/O
Description
Comment
USIM1_VDD
43
PO
Power supply for (U)SIM1 card
Either 1.8V or 3.0V is
supported by the module
automatically.
supported by the module
automatically.
USIM1_DATA 45
IO
Data signal of (U)SIM1 card
USIM1_CLK
46
DO
Clock signal of (U)SIM1 card
USIM1_RST
44
DO
Reset signal of (U)SIM1 card
USIM1_
PRESENCE
PRESENCE
42
DI
(U)SIM1 card insertion detection
USIM_GND
47
Specified ground for (U)SIM card
USIM2_VDD
87
PO
Power supply for (U)SIM2 card
Either 1.8V or 3.0V is
supported by the module
automatically.
supported by the module
automatically.
USIM2_DATA 86
IO
Data signal of (U)SIM2 card
USIM2_CLK
84
DO
Clock signal of (U)SIM2 card
USIM2_RST
85
DO
Reset signal of (U)SIM2 card
USIM2_
PRESENCE
PRESENCE
83
DI
(U)SIM2 card insertion detection
NOTES