M10 Hardware Design
judge whether the system is
power on or off. When the
voltage is low, the system is
power off. Otherwise, the
system is power on.
Imax=20mA
to add a
2.2~4.7uF bypass
capacitor, when
using this pin for
power supply.
GND
Digital
ground
Power on or power off
PIN NAME
I/O
DESCRIPTION
DC CHARACTERISTICS COMMENT
PWRKEY
I
Voltage input for power
on/off key. PWRKEY should
be pulled down to turn on or
turn off the system. The user
should keep pressing the key
for a moment when turn on
or turn off the system.
Because the system need
margin time in order to assert
the software.
VILmax=0.3*VBAT
VIHmin=0.7*VBAT
VImax=VBAT
Pull up to VBAT
Internally.
Emergency shutdown
PIN NAME
I/O
DESCRIPTION
DC CHARACTERISTICS COMMENT
EMERG_OFF
I
Voltage input for emergency
shutdown under emergent
situation. EMERG_OFF
should be pulled down for at
least 20ms to emergency
shutdown the system. The
module can restart if
PWRKEY is activated after
emergency shutdown.
VILmax=0.4V
VIHmin=2.2V
V
open
max=2.8V
Open
drain/collector
driver required in
cellular device
application.
If unused keep
pin open.
Audio interfaces
PIN NAME
I/O
DESCRIPTION
DC CHARACTERISTICS COMMENT
MIC1P
MIC1N
I Positive
and
negative
voice-band input
Audio DC Characteristics
refer to chapter 3.9.4
MIC2P
MIC2N
I
Auxiliary positive and
negative voice-band input
If unused keep
pins open
SPK1P
SPK1N
O Positive
and
negative
voice-band output
If unused keep
pin open
SPK2P O
Auxiliary
positive
voice-band output
If unused keep
pins open.
AGND
AGND is separate ground
connection for external audio
circuits.
BUZZER O
Buzzer
output
If unused keep
M10_HD_V1.00
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Quectel