Quectel BG77 - Page 27

LPWA Module Series
BG77 Hardware Design
BG77_Hardware_Design 23 / 76
to digital
converter
interface
ADC1 18 AI
General
purpose analog
to digital
converter
interface
Voltage range:
0.1V to 1.8V
If unused, keep this
pin open.
Other Interface Pins
Pin Name
Pin
No.
I/O Description DC Characteristics Comment
W_DISABLE# 41 DI
Airplane mode
control
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
Pulled up by default.
When it is in low
voltage level, the
module can enter
into airplane mode.
If unused, keep this
pin open.
The pin function is
under development
AP_READY 77 DI
Application
processor sleep
state detection
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
If unused, keep this
pin open.
The pin function is
under development
USB_BOOT 87 DI
Force the
module to enter
into emergency
download mode
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
If unused, keep this
pin open.
PON_TRIG 72 DI
Wake up the
module from
PSM
1.8V power domain.
Rising-edge
triggered.
Pulled-down by
default.
If unused, keep this
pin open.
GRFC pins*
Pin Name
Pin
No.
I/O Description DC Characteristics Comment
GRFC1 83 DO
General RF
control
V
OL
max=0.45V
V
OH
min=1.35V
BOOT_CONFIG.
Do not pull it up