<s>
The	O
Apple	O
M-series	O
coprocessors	B-General_Concept
are	O
motion	B-Device
coprocessors	I-Device
used	O
by	O
Apple	O
Inc	O
.	O
in	O
their	O
mobile	O
devices	O
.	O
</s>
<s>
First	O
released	O
in	O
2013	O
,	O
their	O
function	O
is	O
to	O
collect	O
sensor	O
data	O
from	O
integrated	O
accelerometers	O
,	O
gyroscopes	B-Application
and	O
compasses	O
and	O
offload	O
the	O
collecting	O
and	O
processing	O
of	O
sensor	O
data	O
from	O
the	O
main	O
central	B-General_Concept
processing	I-General_Concept
unit	I-General_Concept
(	O
CPU	O
)	O
.	O
</s>
<s>
The	O
first	O
coprocessor	B-General_Concept
of	O
the	O
series	O
is	O
the	O
M7	B-Device
(	O
codename	O
Oscar	O
)	O
,	O
which	O
was	O
introduced	O
in	O
September	O
2013	O
as	O
part	O
of	O
the	O
iPhone	B-Operating_System
5S	I-Operating_System
.	O
</s>
<s>
Chipworks	O
found	O
that	O
the	O
M7	B-Device
most	O
likely	O
is	O
a	O
NXP	O
LPC1800	O
based	O
microcontroller	B-Architecture
called	O
LPC18A1	O
.	O
</s>
<s>
The	O
updated	O
version	O
M8	O
was	O
introduced	O
in	O
September	O
2014	O
with	O
the	O
iPhone	B-Operating_System
6	I-Operating_System
and	O
also	O
processes	O
data	O
from	O
the	O
barometer	O
that	O
is	O
included	O
in	O
the	O
iPhone	B-Operating_System
6	I-Operating_System
and	O
iPad	B-Operating_System
Air	I-Operating_System
2	I-Operating_System
.	O
iFixit	O
have	O
identified	O
the	O
M8	O
in	O
the	O
iPhone	B-Operating_System
6	I-Operating_System
to	O
be	O
an	O
NXP	O
device	O
with	O
a	O
very	O
similar	O
name	O
,	O
the	O
LPC18B1	O
.	O
</s>
<s>
The	O
later	O
coprocessors	B-General_Concept
are	O
embedded	O
into	O
the	O
A-series	O
SoCs	O
.	O
</s>
<s>
September	O
2015	O
brought	O
the	O
M9	O
motion	B-Device
coprocessor	I-Device
embedded	O
within	O
the	O
A9	O
chip	O
found	O
in	O
the	O
iPhone	B-Operating_System
6S	I-Operating_System
,	I-Operating_System
iPhone	I-Operating_System
6S	I-Operating_System
Plus	I-Operating_System
,	O
first-generation	B-Operating_System
iPhone	I-Operating_System
SE	I-Operating_System
and	O
within	O
the	O
A9X	B-Device
chip	O
found	O
in	O
the	O
first-generation	B-Device
iPad	I-Device
Pro	I-Device
.	O
</s>
<s>
The	O
iPhone	B-Application
7	I-Application
,	O
iPhone	B-Application
7	I-Application
Plus	I-Application
,	O
second-generation	B-Device
iPad	I-Device
Pro	I-Device
feature	O
the	O
M10	O
motion	B-Device
coprocessor	I-Device
,	O
embedded	O
within	O
the	O
A10	O
Fusion	O
and	O
the	O
A10X	B-Device
Fusion	I-Device
chips	O
.	O
</s>
<s>
Apple	O
included	O
the	O
M11	O
in	O
the	O
iPhone	B-Operating_System
8	I-Operating_System
,	O
8	O
Plus	O
and	O
iPhone	B-Operating_System
X	I-Operating_System
,	O
embedded	O
within	O
the	O
A11	B-Device
Bionic	I-Device
SoC	O
.	O
</s>
<s>
Starting	O
with	O
the	O
A12	B-Device
Bionic	I-Device
SoC	O
,	O
Apple	O
has	O
stopped	O
distinguishing	O
the	O
motion	B-Device
coprocessor	I-Device
from	O
the	O
rest	O
of	O
the	O
SoC	O
,	O
and	O
has	O
abandoned	O
the	O
corresponding	O
M-series	O
nomenclature	O
.	O
</s>
<s>
The	O
M-series	O
nomenclature	O
was	O
reintroduced	O
in	O
2020	O
for	O
ARM-based	O
SoCs	O
used	O
in	O
Mac	B-Device
computers	I-Device
and	O
iPad	B-Device
tablets	O
(	O
starting	O
from	O
the	B-Device
5th	I-Device
generation	I-Device
iPad	I-Device
Pro	I-Device
)	O
.	O
</s>
<s>
The	O
Apple	O
M-series	O
coprocessors	B-General_Concept
collect	O
,	O
process	O
,	O
and	O
store	O
sensor	O
data	O
even	O
if	O
the	O
device	O
is	O
asleep	O
,	O
and	O
applications	O
can	O
retrieve	O
data	O
when	O
the	O
device	O
is	O
powered	O
up	O
again	O
.	O
</s>
<s>
In	O
addition	O
to	O
servicing	O
the	O
accelerometer	O
,	O
gyroscope	B-Application
,	O
compass	B-Language
,	O
and	O
in	O
M8	O
and	O
later	O
coprocessors	B-General_Concept
,	O
barometer	O
,	O
the	O
M9	O
coprocessor	B-General_Concept
can	O
recognize	O
Siri	B-Application
voice	O
commands	O
from	O
the	O
built	O
in	O
microphones	B-Application
of	O
the	O
device	O
.	O
</s>
<s>
The	O
M-series	O
motion	B-Device
coprocessors	I-Device
are	O
accessible	O
to	O
applications	O
through	O
the	O
Core	O
Motion	O
API	B-Application
introduced	O
in	O
iOS	B-Operating_System
7	I-Operating_System
,	O
so	O
they	O
do	O
,	O
for	O
example	O
,	O
allow	O
fitness	B-Application
apps	I-Application
that	O
track	O
physical	O
activity	O
and	O
access	O
data	O
from	O
the	O
M	O
processors	O
without	O
constantly	O
engaging	O
the	O
main	O
application	O
processor	O
.	O
</s>
<s>
In	O
iOS	B-Operating_System
10	I-Operating_System
,	O
the	O
motion	B-Device
coprocessor	I-Device
is	O
used	O
to	O
implement	O
raise-to-wake	O
functionality	O
,	O
reducing	O
idle	O
energy	O
usage	O
.	O
</s>
