<s>
The	O
ATmega328	B-Device
is	O
a	O
single-chip	O
microcontroller	B-Architecture
created	O
by	O
Atmel	O
in	O
the	O
megaAVR	O
family	O
(	O
later	O
Microchip	O
Technology	O
acquired	O
Atmel	O
in	O
2016	O
)	O
.	O
</s>
<s>
It	O
has	O
a	O
modified	B-Device
Harvard	I-Device
architecture	I-Device
8-bit	O
RISC	B-Architecture
processor	I-Architecture
core	O
.	O
</s>
<s>
The	O
Atmel	O
8-bit	O
AVR	B-Architecture
RISC-based	B-Architecture
microcontroller	B-Architecture
combines	O
32KB	O
ISP	B-Device
flash	B-Device
memory	I-Device
with	O
read-while-write	O
capabilities	O
,	O
1KB	O
EEPROM	B-General_Concept
,	O
2KB	O
SRAM	B-Architecture
,	O
23	O
general-purpose	O
I/O	O
lines	O
,	O
32	O
general-purpose	O
working	B-General_Concept
registers	I-General_Concept
,	O
3	O
flexible	O
timer/counters	O
with	O
compare	O
modes	O
,	O
internal	O
and	O
external	O
interrupts	B-Application
,	O
serial	O
programmable	O
USART	O
,	O
a	O
byte-oriented	O
2-wire	O
serial	O
interface	O
,	O
SPI	B-Architecture
serial	O
port	O
,	O
6-channel	O
10-bit	O
A/D	O
converter	O
(	O
8	O
channels	O
in	O
TQFP	B-Algorithm
and	O
QFN/MLF	O
packages	O
)	O
,	O
programmable	O
watchdog	B-Application
timer	I-Application
with	O
internal	O
oscillator	O
,	O
and	O
5	O
software-selectable	O
power-saving	O
modes	O
.	O
</s>
<s>
A	O
common	O
alternative	O
to	O
the	O
ATmega328	B-Device
is	O
the	O
"	O
picoPower	O
"	O
ATmega328P	B-Device
.	O
</s>
<s>
ATmega328	B-Device
is	O
commonly	O
used	O
in	O
many	O
projects	O
and	O
autonomous	B-Architecture
systems	I-Architecture
where	O
a	O
simple	O
,	O
low-powered	O
,	O
low-cost	O
micro-controller	B-Architecture
is	O
needed	O
.	O
</s>
<s>
This	O
is	O
the	O
flash	B-Device
write	O
command	O
.	O
</s>
<s>
Wait	O
for	O
at	O
least	O
20ms	O
and	O
then	O
the	O
programming	O
enable	O
serial	O
instruction	O
0xAC	O
,	O
0x53	O
,	O
0x00	O
,	O
0x00	O
is	O
sent	O
to	O
the	O
MOSI	B-Architecture
pin	O
.	O
</s>
