LPWA Module Series
BG770A-GL Hardware Design
BG770A-GL_Hardware_Design 22 / 75
Table 5: Pin Description
Power Supply
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
VBAT_BB
19
PI
Power supply for
the module’s
baseband part
Vmax = 4.35 V
Vmin = 2.2 V
Vnom = 3.3 V
Refer to NOTE 1
VBAT_RF
20
PI
Power supply for
the module’s RF
part
Vmax = 4.2 V
Vmin = 3.1 V
Vnom = 3.3 V
Refer to NOTE 1
VDD_EXT
21
PO
Provide 1.8 V for
external circuit
Vnom = 1.8 V
I
O
max = 50 mA
If this pin is unused,
keep it open.
GND
22–25, 27, 28, 30, 31, 43, 47, 52–56, 58, 66, 73–75, 84–86, 88, 89
Turn on/off
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
PWRKEY*
46
DI/PU
Turn on/off the
module
V
IL
max = 0.3 V
V
IH
min = 1.0 V
Reset
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
RESET_N
45
DI/PU
Reset the module
V
IL
max = 0.3 V
V
IH
min = 1.3 V
Status Indication
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
STATUS
78
DO/PD
Indicate the
module's operation
status
1.8 V
If this pin is unused,
keep it open.
NET_STATUS* 79
DO/
PU
Indicate the
module's network
activity status
1.8 V
USB Interface*
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
USB_VBUS
12
AI
USB connection
detect
V
IH
max = 2.0 V
V
IH
min = 1.19 V
