Pin Description - Quectel M35 User Manual

3.1.2. Pin Description

Table 3: Pin Description
Power Supply
PIN NAME PIN NO. I/O
VBAT 33, 34
VRTC 32
VDD_
19
EXT
35,36,3
GND
7,38, 40
Turn on/off
PIN NAME PIN NO. I/O
PWRKEY 10
Emergency Shutdown
M35_User_Manual
DESCRIPTION
Main power supply of
I module:
VBAT=3.3V~4.6V
Power supply for RTC
when VBAT is not supplied
for the system.
I/O
Charging for backup
battery or golden capacitor
when the VBAT is applied.
Supply 2.8V voltage for
O
external circuit.
Ground
DESCRIPTION
Power on/off
PWRKEY should be pulled
I
down for a moment to turn
on or turn off the system.
Confidential / Released
GSM/GPRS Module Series
DC
CHARACTERISTICS
Vmax=4.6V
Vmin=3.3V
Vnorm=4.0V
VImax=3.3V
VImin=1.5V
VInorm=2.8V
VOmax=3V
VOmin=2V
VOnorm=2.8V
Iout(max)=2mA
Iin≈10uA
Vmax=2.9V
Vmin=2.7V
Vnorm=2.8V
Imax=20mA
DC
CHARACTERISTICS
VILmax=
key.
0.1×VBAT
VIHmin=
0.6×VBAT
VImax=3.1V
M35 User Manual
COMMENT
Make sure that
supply sufficient
current in a
transmitting burst
typically rises to
1.6A.
If unused, keep
this pin open.
1. If unused, keep
this pin open.
2. Recommend to
add a 2.2~4.7uF
bypass capacitor,
when using this
pin for power
supply.
COMMENT
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