<s>
MiWi	B-Device
is	O
a	O
proprietary	O
wireless	O
protocol	O
supporting	O
peer-to-peer	O
,	O
star	B-Architecture
network	I-Architecture
connectivity	O
.	O
</s>
<s>
MiWi	B-Device
uses	O
small	O
,	O
low-power	O
digital	O
radios	O
based	O
on	O
the	O
IEEE	O
802.15.4	O
standard	O
,	O
and	O
is	O
designed	O
for	O
low-power	O
,	O
cost-constrained	O
networks	O
,	O
such	O
as	O
industrial	O
monitoring	O
and	O
control	O
,	O
home	O
and	O
building	O
automation	O
,	O
remote	O
control	O
,	O
wireless	O
sensors	O
,	O
lighting	O
control	O
,	O
and	O
automated	O
meter	O
reading	O
.	O
</s>
<s>
The	O
MiWi	B-Device
protocol	O
is	O
supported	O
on	O
Microchip	O
's	O
SAMR30	O
(	O
sub-gigahertz	O
)	O
and	O
SAMR21	O
(	O
2.4	O
GHz	O
)	O
ARM	O
Cortex-M0	O
+	O
devices	O
and	O
modules	O
.	O
</s>
<s>
Legacy	O
MiWi	B-Device
protocol	O
code	O
supporting	O
PIC	B-Architecture
and	O
dsPIC	O
microcontrollers	B-Architecture
has	O
been	O
frozen	O
and	O
is	O
no	O
longer	O
recommended	O
for	O
new	O
designs	O
;	O
however	O
,	O
it	O
is	O
still	O
available	O
in	O
the	O
Microchip	O
Library	O
for	O
Applications	O
(	O
MLA	O
)	O
for	O
the	O
MPLAB	O
Integrated	O
Development	O
Environment	O
.	O
</s>
<s>
Microchip	O
Technology	O
released	O
technical	O
information	O
on	O
MiWi	B-Device
.	O
</s>
<s>
These	O
are	O
not	O
primarily	O
protocol	O
specifications	O
and	O
are	O
focused	O
on	O
implementing	O
the	O
MiWi	B-Device
protocol	O
on	O
Microchip	O
microcontrollers	B-Architecture
.	O
</s>
<s>
Many	O
developers	O
trying	O
to	O
use	O
WPAN	O
technologies	O
have	O
observed	O
that	O
the	O
competing	O
Zigbee	B-Protocol
WPAN	O
protocol	O
seems	O
undesirably	O
complex	O
.	O
</s>
<s>
Accordingly	O
,	O
there	O
exists	O
a	O
technical	O
niche	O
for	O
simpler	O
protocols	O
,	O
of	O
which	O
MiWi	B-Device
is	O
a	O
proprietary	O
example	O
.	O
</s>
<s>
The	O
MiWi	B-Device
protocol	O
is	O
a	O
small	O
foot-print	O
alternative	O
(	O
3K-32K	O
)	O
to	O
Zigbee	B-Protocol
(	O
40K-180K	O
)	O
,	O
for	O
cost-sensitive	O
applications	O
with	O
limited	O
memory	O
.	O
</s>
<s>
The	O
MiWi	B-Device
protocol	O
stack	O
supports	O
star	B-Architecture
network	I-Architecture
and	O
peer-to-peer	O
wireless-network	O
topologies	O
,	O
useful	O
for	O
simple	O
,	O
short-range	O
,	O
wireless	O
node-to-node	O
communication	O
.	O
</s>
<s>
Microchip	O
Technology	O
released	O
MiWi	B-Device
support	O
on	O
the	O
SAMR30	O
and	O
SAMR21	O
RF-MCU	O
'	O
s	O
in	O
2018	O
.	O
</s>
<s>
Both	O
devices	O
are	O
ARM	O
Cortex	O
M0+	O
,	O
and	O
have	O
256	O
KB	O
Flash	O
and	O
up	O
to	O
40	O
KB	O
RAM	O
and	O
utilize	O
OQPSK	B-General_Concept
RF	O
Modulation	O
defined	O
in	O
IEEE	O
802.15.4	O
for	O
a	O
+3dB	O
advantage	O
in	O
power	O
efficiency	O
vs.	O
FSK	O
modulation	O
.	O
</s>
<s>
Legacy	O
devices	O
supporting	O
MiWi	B-Device
include	O
several	O
PIC	B-Architecture
Microcontrollers	I-Architecture
paired	O
with	O
the	O
MRF89XA	O
(	O
Proprietary	O
Sub-GHz	O
Transceiver	O
)	O
or	O
the	O
MRF24J40	O
(	O
an	O
IEEE	O
802.15.4	O
2.4	O
GHz	O
transceiver	O
)	O
.	O
</s>
<s>
In	O
2008	O
,	O
Microchip	O
released	O
a	O
2.4GHz	O
wireless	O
transceiver	O
module	O
with	O
a	O
standard	O
4-wire	O
SPI	O
interface	O
paired	O
with	O
several	O
Microchip	B-Architecture
PIC	I-Architecture
and	O
dsPIC	O
microcontrollers	B-Architecture
(	O
the	O
Microchip	O
MRF24J40MA	O
,	O
MRF24J40MD	O
,	O
MRF24J40ME	O
)	O
,	O
and	O
can	O
be	O
used	O
in	O
production	O
devices	O
.	O
</s>
<s>
Being	O
ZigBee	B-Protocol
compliant	O
,	O
and	O
capable	O
of	O
communicating	O
using	O
MiWi	B-Device
wireless	O
protocols	O
,	O
it	O
is	O
based	O
on	O
the	O
IEEE	O
802.15.4	O
Wireless	O
PAN	O
standard	O
.	O
</s>
<s>
Microchip	O
Technology	O
's	O
ZENA	O
(	O
Zigbee	B-Protocol
Enhanced	O
Network	O
Analyzer	O
)	O
is	O
a	O
wireless	O
packet	O
sniffer	O
and	O
network	O
analyzer	O
following	O
the	O
IEEE	O
802.15.4	O
specification	O
on	O
the	O
2.4GHz	O
band	O
.	O
</s>
<s>
The	O
ZENA	O
analyzer	O
supports	O
both	O
the	O
ZigBee	B-Protocol
and	O
MiWi	B-Device
protocols	O
.	O
</s>
<s>
With	O
the	O
provided	O
key	O
of	O
the	O
network	O
,	O
data	O
on	O
encrypted	O
MiWi	B-Device
networks	O
can	O
be	O
sniffed	O
and	O
viewed	O
as	O
well	O
.	O
</s>
