Product Info

NB-IoT Module Series
BC660K-GL Hardware Design
BC660K-GL_Hardware_Design
3-16
/ 59
3.2. Pin Description
Table 3: I/O Parameters Definition
Table 4: Pin Description
Type
Description
AI
Analog input
AO
Analog output
DI
Digital input
DO
Digital output
IO
Bidirectional
PI
Power input
PO
Power output
Power Supply
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
VBAT
42, 43
PI
Power supply for
the module
Vmax = 4.3 V
Vmin = 2.2 V
Vnorm = 3.3 V
VDD_EXT
24
PO
1.8/3.3 V output
for external
circuit
Vnorm = 1.8/3.3 V
No voltage output in
Deep Sleep/Light
Sleep mode.
It is intended to supply
power for the module’s
pull-up circuits, and is
not recommended to
be used as the power
supply for external
circuits.
GND
1, 27, 34, 36, 37, 40, 41, 56, 57, 58
Power Key Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment