Microchip Technology ATmega4809 Curiosity Nano, Hardware User'S Manual

Page: 31 / 42

7. Appendix
7.1 Schematic
Figure 7-1. ATmega4809 Curiosity Nano Schematic
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
D
D
C
C
B
B
A
A
2
of
4
A
T
m
ega
48
09
Cu
riosi
ty
Na
n
o
17
.0
8.
20
20
A
T
m
eg
a4
80
9_
C
ur
io
si
ty
_N
an
o_
Ta
rg
et
_M
C
U
.S
ch
D
oc
Pr
oj
ec
t T
itle
PC
B
A
ss
em
bly
N
umber:
PC
B
A
R
evision:
File:
PC
B
Nu
mber:
PC
B
Re
vision:
Desig
n
ed w
ith
Dra
wn
By
:
Mi
cr
oc
hip
No
rwa
y
Sh
ee
t T
itle
Ta
rg
et
M
C
U
E
ng
ineer:
H
N/
T
F
A
08-2838
7
Size
A
3
A
09-3094
8
Pa
ge:
Date:
A
lti
um
.c
om
A
T
m
eg
a4
80
9-
AF
R
P
A
5
1
P
A
6
2
P
A
7
3
P
B
0
4
P
B
1
5
P
B
2
6
P
B
3
7
P
B
4
8
P
B
5
9
P
C
0
1
0
P
C
1
1
1
P
C
2
1
2
PC 3
13
VD D
14
GN D
15
PC 4
16
PC 5
17
PC 6
18
PC 7
19
PD 0
20
PD 1
21
PD 2
22
PD 3
23
PD 4
24
P
D
5
2
5
P
D
6
2
6
P
D
7
2
7
A
V
D
D
2
8
G
N
D
2
9
P
E
0
3
0
P
E
1
3
1
P
E
2
3
2
P
E
3
3
3
(
T
O
S
C
1
)
P
F
0
3
4
(
T
O
S
C
2
)
P
F
1
3
5
P
F
2
3
6
PF 3
37
PF 4
38
PF 5
39
PF 6
40
UP DI
41
VD D
42
GN D
43
(E XT CL K) PA 0
44
PA 1
45
PA 2
46
PA 3
47
PA 4
48
U200
GND
V
C
C
_T
A
RGET
100n C201
10p C203
N
.M
13pF C204
N
.M
GND
PA
5_
SP
I_
M
IS
O
PA
6_
SP
I_
SCK
PA
7_
SP
I_
SS
PB
0_
U
A
R
T3_TX
PB
1_
U
A
R
T3_RX
PB2 PB3 PB4 PB5 PC
0_
U
A
R
T1_TX
PC
1_
U
A
R
T1_RX
PC2
PC3
PC4
PC5
PC6
PC7
PD0_AIN0
PD1_AIN1
PD2_AIN2
PD3_TCA0WO3
PD4_TCA0WO4
PA3_I 2C_SCL
PA1_UAR T0_RX
UPDI
PF5
PF3
PF2 PF
1_
T
O
SC2
PF
0_
T
O
SC1
PE3 PE2 PE1 PE0 PD
5_
A
IN5
PD
6_
A
IN6
PD
7_
A
IN7
GND
V
C
C
_T
A
RGET
100n C202
GND
V
C
C
_T
A
RGET
100n C200
PF1_TOS C2
PF0_TOS C1
PA2_I 2C_SDA
PA0_UAR T0_TX
PF4
PA4_S PI_MOS I
GND
PA
7_
SP
I_
SS
PA
6_
SP
I_
SCK
PA
5_
SP
I_
M
IS
O
PA
4_
SP
I_
M
O
SI
PA
3_
I2
C
_S
C
L
PA
2_
I2
C
_S
D
A
PA
1_
U
A
R
T0_RX
PA
0_
U
A
R
T0_TX
PB
0_
U
A
R
T3_TX
PB
1_
U
A
R
T3_RX
PB2 PB3
PB4 PB5 PD
7_
A
IN7
PD
6_
A
IN6
PD
5_
A
IN5
PD
4_
T
CA
0WO4
PD
3_
T
CA
0WO3
PD
2_
A
IN2
PD
1_
A
IN1
PD
0_
A
IN0
PF5 PF4 PF3 PF2
32
kH
z
C
ry
st
al
PB
0_
U
A
R
T3_TX
PB
1_
U
A
R
T3_RX
1k
R203
U
SE
R
L
E
D
V
C
C
_T
A
RGET
PF6
PF6
PF5
GND
U
SE
R
BU
T
T
O
N
PF
1_
T
O
SC2
PF
0_
T
O
SC1
PE3 PE2 PE1 PE0 PC
0_
U
A
R
T1_TX
PC
1_
U
A
R
T1_RX
PC2 PC3
PC4 PC5 PC6 PC7
1k
R202
YELL OWL ED
SML -D12Y1WT86
2 1
D200
TS604VM1-035CR
1 3
4 2
SW200
GND GND
GND GND
GND
U
PD
I
PF6
J207 J208
J209
PF3 PF2
B
L
M1
8P
G
47
1S
N1
L
200
A
Tmega4
809
2.
2u
F
C205
GND
D
B
G
0
C
D
C
_
U
A
R
T
TX RX
U
A
R
T
CDC_TX
CDC_RX
DBG2
D
B
G
1
D
B
G
3
D
B
G
2
DE
BUG
G
E
R
C
O
NNE
C
T
IO
NS
DBG1
DBG3
DBG0
V
O
F
F
I
D
_
S
Y
S
ID_S YS
VOFF
T
A
R
G
E
T
B
UL
K
100k
R200
V
C
C
_T
A
RGET
R
E
SE
T
P
u
ll
V
B
U
S
C
D
C
R
X
3
CDC
T
X
4
D
B
G
1
5
D
B
G
2
6
0
T
X
7
1
R
X
8
2
SD
A
9
3 S
CL
1
0
4 M
OS
I
1
1
5 M
IS
O
1
2
6
S
C
K
1
3
7
S
S
1
4
GN
D
1
5
0
(T
X
)
1
6
1 (RX
)
1
7
2
1
8
3
1
9
0
2
0
GN
D
2
4
D
B
G
3
5
4
D
B
G
0
5
3
GN
D
5
2
V
C
C
5
1
P
W
M
3
4
6
A
D
C
2
4
5
A
D
C
1
4
4
A
D
C
0
4
3
GN
D
4
2
4
3
8
4
3
4
GN
D
3
3
A
D
C
7
5
0
A
D
C
6
4
9
A
D
C
5
4
8
P
W
M
4
4
7
DEBUGGER
TA
RGET
ID
2
VOFF
5
5
1
2
1
2
2
2
3
2
3
0
2
5
1
2
6
2
2
7
3
2
8
4
2
9
5
3
0
6
3
1
7
3
2
5
3
5
6
3
6
7
3
7
5
3
9
6
4
0
7
4
1
R
E
SE
R
V
E
D
1
V
B
U
S
5
6
C
N
A
NO56
-pin
edge con
nec
tor
J200
J201 J203 J205 J206
J202 J204
NC
J211
J210
XOUT
XIN
VCC_EDGE
VCC_EDGE
A
T
m
ega
4809
U
PD
I
G
PI
O1
G
PI
O0
R
E
SE
T
D
B
G
0
D
B
G
1
D
B
G
2
D
B
G
3
De
bu
gg
er
C
DC
T
X
C
DC
R
X
U
A
R
T
3
RX
U
A
R
T
3
T
X
V
T
G
1.
8V
- 5
.5V
P
F
3
P
F
2
P
F
6
UP
DI
P
B0
P
B1
N
am
e
P
in
32
.76
8k
Hz
XC200
N
.M
Cryst
al d
atash
eet:
Ccry
stal
= 7
pF
m
ax
E
SR
=
70k
O
hm
A
cc
ura
cy
±2
0p
pm
A
T
m
eg
a480
9 da
tash
eet
:
Cx
in
=
5
.5
pF
Cx
ou
t = 5
.5
pF
C
l
≈
1/
(
(1
/5
.5
pF
)+
(
1/
5.
5p
F)
)
≈
2.7
5p
F
M
ax
im
um
L
oa
d
=
12
.5
pF
M
ax
im
um
E
SR
=
80k
O
hm
E
st
im
at
ed
C
pc
b
=
0.
5p
F
E
st
im
at
ed
lo
ad
C
=
2
(C
cr
ys
ta
l-
C
pa
ra
-
C
pc
b)
C
=
2
(
7pF
-
2.7
5pF
-
0.
5p
F)
C
=
7.5
pF
Selected in desi
gn after verifica
tion
C= 10/13pF
NOTE on UAR
T/CDC:
RX
/T
X
on
the
h
ea
de
r
de
no
te
s
th
e
inpu
t/out
put
direc
tion
of t
he si
gn
al
re
sp
ec
tive to it
's
s
ou
rce
.
CDC TX is output from t
he
D
EB
UG
GE
R.
CD
C
RX
is
in
pu
t to
the
D
E
BU
GG
ER
.
TX is
outpu
t from
th
e
T
A
R
G
E
T
d
ev
ic
e.
RX
is
in
put
to
th
e T
A
R
G
E
T
d
ev
ic
e.
NOTE on I2C: No
p
ul
l-
up
s
on
b
oa
rd
. Pu
ll
-u
ps
s
ho
ul
d
be
m
ount
ed cl
ose to
slave d
ev
ic
e(
s)
.
NOT
E o
n C
rys
tal
ca
lcu
lat
io
ns:
Th
e
ca
lc
ul
at
io
ns
a
re
b
as
ed
o
n
a
cr
ys
ta
l
use
d o
n a
n e
arl
ier
re
vi
si
on
o
f
th
is
b
oa
rd
.
ATmega4809 Curiosity Nano
Appendix
©
2020 Microchip Technology Inc.
User Guide
DS50002804B-page 31