<s>
Qorivva	B-General_Concept
is	O
a	O
line	O
of	O
Power	O
ISA	O
2.03-based	O
microcontrollers	B-Architecture
from	O
Freescale	O
built	O
around	O
one	O
or	O
more	O
PowerPC	B-Device
e200	I-Device
cores	O
.	O
</s>
<s>
The	O
hardware-based	O
fault	O
detection	O
and	O
correction	O
features	O
found	O
within	O
this	O
line	O
include	O
dual	O
cores	O
that	O
may	O
run	O
in	O
lock-step	B-General_Concept
,	O
full-path	O
ECC	B-Error_Name
,	O
automated	O
self-testing	O
of	O
memory	O
and	O
logic	O
,	O
peripheral	O
redundancy	O
,	O
and	O
monitor/checker	O
cores	O
.	O
</s>
<s>
Freescale	O
has	O
selected	O
the	O
following	O
families	O
of	O
MPC5xxx	B-Device
processors	O
for	O
inclusion	O
in	O
the	O
program	O
targeting	O
automotive	O
,	O
commercial	O
,	O
industrial	O
,	O
and	O
aerospace	O
applications	O
,	O
wherein	O
assurances	O
of	O
correctness	O
and	O
safety	O
are	O
primary	O
requirements	O
.	O
</s>
<s>
Within	O
that	O
program	O
,	O
the	O
MPC57xx	O
are	O
the	O
primary	O
microcontrollers	B-Architecture
targeted	O
for	O
safety-critical	B-Application
automotive	O
applications	O
.	O
</s>
<s>
Each	O
product	O
in	O
this	O
family	O
features	O
a	O
matched	O
pair	O
of	O
e200	B-Device
cores	O
intended	O
for	O
primary	O
computation	O
,	O
but	O
also	O
incorporate	O
at	O
least	O
one	O
other	O
e200	B-Device
core	O
in	O
a	O
support	O
role	O
(	O
e.g.	O
,	O
interface	O
coprocessor	O
or	O
"	O
Safety	O
Checker	O
"	O
)	O
.	O
</s>
<s>
To	O
support	O
attainment	O
of	O
higher	O
levels	O
of	O
fault	O
tolerance	O
(	O
such	O
as	O
those	O
expected	O
in	O
the	O
context	O
of	O
ASIL	O
D	O
)	O
,	O
the	O
paired	O
e200	B-Device
cores	O
may	O
be	O
configured	O
to	O
operate	O
as	O
dual	B-General_Concept
lockstep	I-General_Concept
processors	I-General_Concept
.	O
</s>
<s>
"	O
End	O
to	O
End	O
Error	O
Code	O
Correction	O
"	O
(	O
e2eECC	O
)	O
-	O
all	O
memory	O
storage	O
and	O
internal	O
transfers	O
may	O
be	O
protected	O
by	O
error	B-Error_Name
correction	I-Error_Name
encoding	O
having	O
a	O
Hamming	O
Distance	O
of	O
4	O
,	O
that	O
distance	O
providing	O
automatic	O
single	O
bit-flip	O
error	B-Error_Name
correction	I-Error_Name
and	O
double	O
bit-flip	O
error	O
detection	O
.	O
</s>
<s>
Products	O
in	O
these	O
families	O
each	O
embody	O
one	O
or	O
more	O
e200	B-Device
cores	O
,	O
usually	O
of	O
different	O
versions	O
.	O
</s>
<s>
Of	O
these	O
,	O
only	O
the	O
MCP5643L	O
features	O
lock-step	B-General_Concept
cores	O
and	O
is	O
the	O
only	O
member	O
of	O
the	O
family	O
explicitly	O
offered	O
in	O
support	O
of	O
ISO	O
26262	O
.	O
</s>
<s>
The	O
MPC5643L	O
is	O
notable	O
for	O
Freescale	O
's	O
claims	O
that	O
it	O
is	O
the	O
first	O
automotive	O
microcontroller	B-Architecture
to	O
be	O
certified	O
by	O
an	O
independent	O
accredited	O
assessor	O
as	O
compliant	O
with	O
the	O
relevant	O
MCU	O
requirements	O
of	O
the	O
automotive	O
functional	O
safety	O
standard	O
ISO	O
26262	O
.	O
</s>
<s>
The	O
Freescale	O
microcontroller	B-Architecture
MPC5643L	O
has	O
been	O
assessed	O
according	O
to	O
the	O
relevant	O
requirements	O
of	O
ISO	O
26262	O
for	O
microcontroller	B-Architecture
development	O
and	O
verification	O
&	O
validation	O
.	O
</s>
