Pin Description - Quectel NB-IoT Module Series Hardware Design

3.3. Pin Description

Table 3: I/O Parameters Definition
Type
IO
DI
DO
PI
PO
AI
AO
Table 4: Pin Description
Power Supply
Pin Name Pin No.
VBAT_BB 42
VBAT_RF 43
VDD_
24
EXT
1, 27, 34,
GND 36, 37, 40,
41
BC66_Hardware_Design
Description
Bidirectional
Digital input
Digital output
Power input
Power output
Analog input
Analog output
I/O Description
Power supply for
PI the module's
baseband part
Power supply for
PI the module's RF
part
1.8V output
PO
power supply
GND
DC Characteristics
Vmax=3.63V
Vmin=2.1V
Vnorm=3.3V
Vmax=3.63V
Vmin=2.1V
Vnorm=3.3V
Vmin=1.53V
Vnorm=1.8V
NB-IoT Module Series
BC66 Hardware Design
Comment
No voltage output in
PSM mode.
It is intended to supply
power for the module's
pull-up circuits, and is
thus not recommended
to be used as the
power supply
external circuits.
15 / 50
for