Product Info

NB-IoT Module Series
BC660K-GL Hardware Design
BC660K-GL_Hardware_Design
3-17
/ 59
BOOT
7
DI
Control module
enter download
mode
V
IL
max = 0.2 × VDD_EXT
V
IH
min = 0.7 × VDD_EXT
Active low.
Reset Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RESET_N
15
DI
Reset the
module
V
IL
max = 0.38 V
V
IH
min = 1.33 V
VIHmax = 3.6 V
Active low.
PSM_EINT Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
PSM_EINT
19
DI
Dedicated
external interrupt
pin used to wake
up the module
from Deep
Sleep/Light
Sleep mode..
V
IL
max = 0.38 V
V
IH
min = 1.33 V
VIHmax = 3.6 V
Active on falling
edge.
Network Status Indication*
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
NETLIGHT
16
DO
Indicate the
module's
network activity
status
V
OL
max = 0.15 × VDD_EXT
V
OH
min = 0.8 × VDD_EXT
ADC Interface*
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
ADC0
9
AI
General-purpose
analog to digital
converter
interface
Voltage range:
0–1.2 V
Main UART Port
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
MAIN_RXD
18
DI
Main UART
receive
V
IL
max = 0.2
×
VDD_EXT
V
IH
min = 0.7
×
VDD_EXT
MAIN_TXD
17
DO
Main UART
transmit
V
OL
max = 0.15 × VDD_EXT
V
OH
min = 0.8 × VDD_EXT
VDD_EXT
power domain.