Embedian, Inc.
153
SMARC-iMX8MM Computer on Module User’s Manual
v. 1.2
4.2.3.
Power
Management
Signals
The
pins
listed
in
the
following
table
are
related
to
power
management.
They
will
be
used
in
a
battery
‐
operated
system.
SMARC
Edge
Finger
I/O
Type
Power
Rail
Description
Pin#
Pin
Name
S156
BATLOW#
I
CMOS
VDD_IO
Battery
low
indication
to
Module.
Carrier
to
float
the
line
in
in
‐
active
state.
Pulled
up
on
Module.
Driven
by
OD
part
on
Carrier.
S154
CARRIER_PWR_ON
O
CMOS
VDD_IO
Signal
to
inform
Carrier
board
circuits
being
powered
up
S153
CARRIER_STBY#
O
CMOS
VDD_IO
Module
will
drive
this
signal
low
when
the
system
is
in
a
standby
power
state
S152
CHARGER_PRSNT#
I
CMOS
VDD_IO
Held
low
by
Carrier
if
DC
input
for
battery
charger
is
present.
Pulled
up
on
Module.
Driven
by
OD
part
on
Carrier.
