Quectel EG91 Series Hardware Design page 29
Lte standard module
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Also See for EG91 Series:
- Hardware design (98 pages) ,
- Hardware design (94 pages) ,
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USIM2_VDD
87
USIM2_DATA
86
USIM2_CLK
84
USIM2_RST
85
USIM2_
83
PRESENCE
Main UART Interface
Pin
Pin Name
No.
RI
39
EG91_Series_Hardware_Design
(U)SIM2 card power
PO
supply
DIO
(U)SIM2 card data
DO
(U)SIM2 card clock
DO
(U)SIM2 card reset
(U)SIM2 card
DI
insertion detection
I/O
Description
DO
Ring indication
LTE Standard Module Series
For 1.8 V (U)SIM:
Vmax = 1.9 V
Vmin = 1.7 V
Either 1.8 V or 3.0 V is
supported by the module
For 3.0 V (U)SIM:
automatically.
Vmax = 3.05 V
If unused, keep it open.
Vmin = 2.7 V
I
max = 50 mA
O
For 1.8 V (U)SIM:
V
max = 0.6 V
IL
V
min = 1.2 V
IH
V
max = 0.45 V
OL
V
min = 1.35 V
OH
For 3.0 V (U)SIM:
V
max = 1.0 V
IL
V
min = 1.95 V
IH
V
max = 0.45 V
OL
V
min = 2.55 V
OH
For 1.8 V (U)SIM:
V
max = 0.45 V
OL
V
min = 1.35 V
OH
For 3.0 V (U)SIM:
V
max = 0.45 V
OL
V
min = 2.55 V
OH
For 1.8 V (U)SIM:
V
max = 0.45 V
OL
V
min = 1.35 V
OH
For 3.0 V (U)SIM:
V
max = 0.45 V
OL
V
min = 2.55 V
OH
V
min = -0.3 V
IL
V
max = 0.6 V
1.8 V power domain.
IL
V
min = 1.2 V
If unused, keep it open.
IH
V
max = 2.0 V
IH
DC
Comment
Characteristics
V
max = 0.45 V
1.8 V power domain.
OL
28 / 105
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