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Quectel Manuals
Control Unit
NB-IoT Module Series
Hardware design
Quectel NB-IoT Module Series Hardware Design page 18
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Pin Name
Pin No.
RXD_AUX
28
TXD_AUX
29
Debug UART Port
Pin Name
Pin No.
RXD_DBG
38
TXD_DBG
39
Ringing Signal
Pin Name
Pin No.
RI*
20
USIM Interface
Pin Name
Pin No.
SIM_VDD
14
SIM_RST
12
SIM_DATA
11
SIM_CLK
13
SIM_GND
10
Antenna Interface
Pin Name
Pin No.
RF_ANT
35
SPI Interface
Pin Name
Pin No.
BC66_Hardware_Design
I/O
Description
DI
Receive data
DO Transmit data
I/O
Description
DI
Receive data
DO Transmit data
I/O
Description
DO Ring indicator
I/O
Description
USIM card
DO
power supply
USIM card reset
DO
signal
USIM card data
IO
signal
USIM card clock
DO
signal
Specified
GND
ground for USIM
card
I/O
Description
RF antenna
IO
interface
I/O
Description
DC Characteristics
DC Characteristics
DC Characteristics
DC Characteristics
Vnorm=1.8V
V
max=0.15×SIM_VDD
OL
V
min=0.85×SIM_VDD
OH
V
max=0.25×SIM_VDD
IL
V
min=0.75×SIM_VDD
IH
V
max=0.15×SIM_VDD
OL
V
min=0.85×SIM_VDD
OH
V
max=0.15×SIM_VDD
OL
V
min=0.85×SIM_VDD
OH
DC Characteristics
50Ω characteristic
impedance
DC Characteristics
NB-IoT Module Series
BC66 Hardware Design
Comment
1.8V power domain.
Comment
1.8V power domain.
Comment
1.8V power domain.
Comment
Comment
Comment
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