Fibocom MG661-EU - Pin Details

2 Pin Definition
13
2.3 Pin Details
Unused pins are left unconnected.
Pins with * indicate that there are notes at the end of the section.
Table 6. Power interfaces
Pin No.
Pin Name
I/O
Power domain
Description
42, 43
VBAT
PI
3.4V–4.5V
Baseband/RF power input (3.4–
4.5V) 3.8 V is recommended
24
VDD_EXT
PO
1.8V
Digital level, 1.8V output, with
the maximum current of 100mA
Table 7. Control interface
Pin No.
Pin Name
I/O
Power
Domain
Description
15
RESET_N
DI
VBAT
When the module is working, pull
down RESET_N 100 ms or longer,
and then release it. The module
resets.
Pins are internally pulled up to VBAT,
and no external pull up is required.
7
PWRKEY
DI
VBAT
In power-off state, pull down PWRKEY
for a long time, and the module
automatically powers on. In power-off
state, pull the PWRKEY for 2s or
longer, and then release it, the module
powers on. In power-on state, pull the
PWRKEY for 3.1s or longer, and then
release it, the module powers off.