<s>
The	O
68HC08	B-Device
(	O
HC08	B-Device
in	O
short	O
)	O
is	O
a	O
broad	O
family	O
of	O
8-bit	O
microcontrollers	B-Architecture
originally	O
from	O
Motorola	O
Semiconductor	O
,	O
later	O
from	O
Freescale	O
Semiconductor	O
.	O
</s>
<s>
HC08	B-Device
's	O
are	O
fully	O
code-compatible	O
with	O
their	O
predecessors	O
,	O
the	O
Motorola	B-Device
68HC05	I-Device
.	O
</s>
<s>
Like	O
all	O
Motorola	O
processors	O
that	O
share	O
lineage	O
from	O
the	O
6800	B-Device
,	O
they	O
use	O
the	O
von	B-Architecture
Neumann	I-Architecture
architecture	I-Architecture
as	O
well	O
as	O
memory-mapped	O
I/O	O
.	O
</s>
<s>
This	O
family	O
has	O
five	O
CPU	B-General_Concept
registers	I-General_Concept
that	O
are	O
not	O
part	O
of	O
the	O
memory	O
.	O
</s>
<s>
One	O
8-bit	O
accumulator	B-General_Concept
A	O
,	O
a	O
16-bit	O
index	B-General_Concept
register	I-General_Concept
H:X	O
,	O
a	O
16-bit	O
stack	O
pointer	O
SP	O
,	O
a	O
16-bit	O
program	B-General_Concept
counter	I-General_Concept
PC	O
,	O
and	O
an	O
8-bit	O
condition	B-General_Concept
code	I-General_Concept
register	I-General_Concept
CCR	O
.	O
</s>
<s>
Some	O
instructions	O
refer	O
to	O
the	O
different	O
bytes	O
in	O
the	O
H:X	O
index	B-General_Concept
register	I-General_Concept
independently	O
.	O
</s>
<s>
Among	O
the	O
HC08	B-Device
's	O
there	O
are	O
dozens	O
of	O
processor	O
families	O
,	O
each	O
targeted	O
to	O
different	O
embedded	O
applications	O
.	O
</s>
<s>
Features	O
and	O
capabilities	O
vary	O
widely	O
,	O
from	O
8	O
to	O
64-pin	O
processors	O
,	O
from	O
LIN	O
connectivity	O
to	O
USB	B-Protocol
1.1	O
.	O
</s>
<s>
A	O
typical	O
and	O
general	O
purpose	O
device	O
from	O
the	O
HC08	B-Device
family	O
of	O
units	O
is	O
the	O
microcontroller	B-Architecture
.	O
</s>
<s>
The	O
Freescale	B-Device
RS08	I-Device
core	O
is	O
a	O
simplified	O
,	O
"	O
reduced-resource	O
"	O
version	O
of	O
the	O
HC08	B-Device
.	O
</s>
