<s>
A	O
digital	B-General_Concept
signal	I-General_Concept
controller	I-General_Concept
(	O
DSC	O
)	O
is	O
a	O
hybrid	O
of	O
microcontrollers	B-Architecture
and	O
digital	B-Architecture
signal	I-Architecture
processors	I-Architecture
(	O
DSPs	O
)	O
.	O
</s>
<s>
Like	O
microcontrollers	B-Architecture
,	O
DSCs	O
have	O
fast	O
interrupt	B-Application
responses	O
,	O
offer	O
control-oriented	O
peripherals	O
like	O
PWMs	O
and	O
watchdog	B-Application
timers	I-Application
,	O
and	O
are	O
usually	O
programmed	O
using	O
the	O
C	B-Language
programming	I-Language
language	I-Language
,	O
although	O
they	O
can	O
be	O
programmed	O
using	O
the	O
device	O
's	O
native	O
assembly	B-Language
language	I-Language
.	O
</s>
<s>
On	O
the	O
DSP	O
side	O
,	O
they	O
incorporate	O
features	O
found	O
on	O
most	O
DSPs	O
such	O
as	O
single-cycle	O
multiply	B-Algorithm
–	I-Algorithm
accumulate	I-Algorithm
(	O
MAC	B-Algorithm
)	O
units	O
,	O
barrel	O
shifters	O
,	O
and	O
large	O
accumulators	B-General_Concept
.	O
</s>
<s>
For	O
example	O
,	O
Infineon	O
and	O
Renesas	O
refer	O
to	O
their	O
DSCs	O
as	O
microcontrollers	B-Architecture
.	O
)	O
</s>
<s>
DSCs	O
,	O
like	O
microcontrollers	B-Architecture
and	O
DSPs	O
,	O
require	O
software	O
support	O
.	O
</s>
<s>
There	O
are	O
a	O
growing	O
number	O
of	O
software	O
packages	O
that	O
offer	O
the	O
features	O
required	O
by	O
both	O
DSP	O
applications	O
and	O
microcontroller	B-Architecture
applications	O
.	O
</s>
<s>
They	O
require	O
:	O
development	O
tools	O
,	O
DSP	O
libraries	O
,	O
optimization	O
for	O
DSP	O
processing	O
,	O
fast	O
interrupt	B-Application
handling	I-Application
,	O
multi-threading	O
,	O
and	O
a	O
tiny	O
footprint	O
.	O
</s>
