Quectel M35 User Manual

GSM/GPRS Module Series
M35 User Manual
M35_User_Manual Confidential / Released 20 / 85
PIN NAME
PIN NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
EMERG_
OFF
11
I
Emergency off. Pulled
down for at least 40ms,
which will turn off the
module in case of
emergency. Use it only
when shutdown via
PWRKEY or AT command
cannot be achieved.
VILmax=0.45V
VIHmin=1.35V
Vopenmax=1.8V
Open
drain/collector
driver required in
cellular device
application.
If unused, keep
this pin open.
Module Indicator
PIN NAME
PIN NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
STATUS
12
O
Indicate module’s
operating status. Output
high level when module
turns on, while output low
level when module turns
off.
VOHmin=
0.85×VDD_EXT
VOLmax=
0.15×VDD_EXT
If unused, keep
these pins open.
Audio Interfaces
PIN NAME
PIN NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
MIC1P
MIC1N
4,5
I
Channel 1 positive and
negative voice input
Refer to Section 3.8
If unused, keep
these pins open.
MIC2P
MIC2N
2,3
I
Channel 2 positive and
negative voice input
SPK1P
SPK1N
7,6
O
Channel 1 positive and
negative voice output
1. If unused, keep
these pins open.
2. Support both
voice and ringtone
output.
AGND
1
Analog ground. Separate
ground connection for
external audio circuits.
If unused, keep
this pin open.
LOUD
SPKN
LOUD
SPKP
8,9
O
Channel 3 positive and
negative voice output
1. If unused, keep
these pins open.
2. Integrate a
Class- AB
amplifier internally.
3. Support both
voice and ringtone
output.

Quectel M35 Specifications

General

Brand	Quectel
Model	M35
Category	Control Unit
Language	English