Schematic

i2c 3.3v pullups
Ethernet (not used) JTAG
PB26
1
PA9
2
PA10
3
PA11
4
PA12
5
PA13
6
PA14
7
PA15
8
PA17
9
VDDCORE
10
PD7
20
PB30
30
VBG
40
SHDN
50
PC3
60
PA18
70
PA23
80
PB19
90
VDDIO
11
PD8
21
PB31
31
VDDUTMI
41
TST
51
VDDCORE
61
PA19
71
PA22
81
PB20
91
GND
12
PD9
22
PD10
32
DFSDP
42
VDDBU
52
VDDIO
62
PA20
72
PA6
82
PB21
92
PD0
13
PA0
23
GNDPLL
33
DFSDM
43
FWUP
53
PC5
63
VDDANA
73
PA4
83
PC11
93
PD1
14
PA1
24
VDDPLL
34
GNDUTMI
44
GNDBU
54
PC6
64
GNDANA
74
PA3
84
PC12
94
PD2
15
PA5
25
XOUT
35
VDDCORE
45
PC1
55
PC7
65
ADVREF
75
PA2
85
PC13
95
PD3
16
PA7
26
XIN
36
JTAGSEL
46
VDDOUT
56
PC8
66
PB15
76
PB12
86
PC14
96
PD4
17
PA8
27
DHSDP
37
NRSTB
47
VDDIN
57
PC9
67
PB16
77
PB13
87
PC15
97
PD5
18
PB28
28
DHSDM
38
XIN32
48
GND
58
PB27
68
PA16
78
PB17
88
PC16
98
PD6
19
PB29
29
VBUS
39
XOUT32
49
PC2
59
NRST
69
PA24
79
PB18
89
PC17
99
PC18
100
PA27
110
PB5
120
PC0
130
PB14
140
PC19
101
PA28
111
PB6
121
PC20
131
PB22
141
PC29
102
PA29
112
PB7
122
PC21
132
PB23
142
PC30
103
PB0
113
PB8
123
PC22
133
PB24
143
VDDCORE
104
PB1
114
VDDCORE
124
PC23
134
PB25
144
VDDIO
105
PB2
115
VDDIO
125
PC24
135
GND
106
PC4
116
GND
126
PC25
136
PA21
107
PC10
117
PB9
127
PC26
137
PA25
108
PB3
118
PB10
128
PC27
138
PA26
109
PB4
119
PB11
129
PC28
139
IC201
ATSAM3X8E
PWM2
+3.3V
UOTGID
XUSB
D+
D−
UOTGVBOF
See separate sheet "Power" for details of
MCU power decoupling
VDDPLL
VDDOUT
SW202
RESET
+3.3V
C208
100nF
/MASTER−RESET
Reset
+3.3V
/ERASE_CMD
ERASE
D
G
S
D
D
G
G
S
S
U202
FDN340P
SW201
ERASE
VDDANA
VDDOUTMI
PWM13
5 6
R206C 1K
7 8
R206D
1K
RXL
TXL
+3.3V
A K
D201
YELLOW
A K
D202
YELLOW
A K
D204
YELLOW
A K
D203
GREEN
V−
4
V+
8
1
−
2
+
3
U203A
LMV358IPWR
3 4
R206B
1K
L
ON
1 2
R206A
1K
+3.3V
LEDs
JTAG_TMS JTAG_TDO JTAG_TDI JTAG_TCK
AREF
TXL
RXL
TX
RX
/MASTER−RESET
(SD)
(ETH)
SS1/PWM4
SS0/PWM10
SCK
MOSI
MISO
AD1
AD2
AD3
PIN43
PIN42
SCL1
SDA1
AD0
PIN24
PIN23
TXD1
RXD1
TXD2
RXD2
PIN31
AD4
EEXTINT
AD5
AD6
AD7
CANRX0
CANTX0
R201
6k8 1%
C205
22pF
R202
39R 1%
R203
39R 1%
C204
22pF_NM
C203
22pF_NM
X202
ABS07L 32.768kHz
C202
22pF
C201
22pF
PWM13 PIN22 SS3 AD14/RXD3 AD11/TXD3 AD10 AD9 AD8 DAC0/CANRX1 DAC1 CANTX1/IO
SCL0−3
SDA0−3
EMDIO EMDC ERX_ER ERXD1 ERXD0 ERX_DV EXTD1 ETXD0 ETX_EN ETX_CLK
PIN51
PIN50
PIN49
PIN48
PIN47
PIN46
PIN45
PIN44
PWM9
PWM8
PWM7
PIN32
PIN30
PWM12
PWM11
PIN29
RXD0
PIN33
PIN34
PIN35
PIN36
PIN37
PIN38
PIN39
PIN40
PIN41
PWM6
PWM5
SS1/PWM4
PWM3
SS0/PWM10
PIN25
PIN26
PIN27
PIN28
TXD0
+3.3V +3.3V
AREF
+3.3V
C206
100nF
C207
100nF
L201
MH2029−300Y
internal pullup
+3.3V
R204 100K
X201 TXC 7A 12MHz 18pF
LED_ON
1
1
2
2
SJ202
CLOSED
1
1
2
2
SJ203
OPEN
1
1
2
2
SJ201
OPEN
R205
1K5
R207
1K5