Figure 6: STEVAL-3DP001V1 circuit schematic: Microcontroller
B
OO
T
U
S
E
R
K
E
Y
RE
S
E
T
M
C
U
M
IC
R
O
C
O
N
T
R
O
LL
E
R
N
O
T
E
:
W
IF
I
R
E
S
E
T
O
P
E
N
D
R
A
I
N
V
DD
_3
V
3
V
DD
_3
V
3
V
DD
_3
V
3
V
DD
_3
V
3
V
DD
_3
V
3
V
DD
_3
V
3
AV
DD
_3
V
3
V
DD
_3
V
3
V
DD
_3
V
3
V
DD
_3
V
3
V
DD
_3
V
3
V
DD
_3
V
3
V
U
SB
_
D
O
N
G
L
E
V
DD
_5
V
S
D
IO
_
D
0
S
D
IO
_
D
1
R
ESE
T
_
M
C
U
E
2_
T
H
E
R
M
IS
T
O
R
E
2_
R
ESE
T
E
3_
D
IR
IR
_
O
N
E
2_
D
IR
O
T
G
_
D
M
O
T
G
_
D
P
J
T
A
G
_
T
M
S
/S
W
D
IO
Y_
DIR
IR
_O
UT
SPI_
MIS
O
E
2_
P
W
M
Z
_
P
W
M
R
ESE
T
_
M
C
U
U
SE
R
_
KE
Y
X_
PW
M
SPI_
MO
SI
E
3_
R
ESE
T
E
1_
R
ESE
T
E
1_
T
H
E
R
M
IS
T
O
R
E
3_
T
H
E
R
M
IS
T
O
R
BED
_T
HE
RM
IS
TO
R_
3
SPI_
CS
SPI_
SC
K
E2_
HEA
T_
PW
M
E3_
HEA
T_
PW
M
USE
R_
KEY
X_
RESE
T
Y_
PW
M
A
LL_
F
L
A
G
U
SE
R
_
SP
I2_
S
C
K
U
SE
R
_
SP
I2_
M
IS
O
U
SE
R
_
SP
I2_
M
O
S
I
Z
_
R
ESE
T
E
1_
D
IR
E
1_
P
W
M
BE
D
_
H
EA
T
_
1
Z
_
D
IR
E
1_
H
EA
T
_
P
W
M
SD
IO_
CM
D
UA
RT
2_R
X
JT
AG
_T
CK
/S
WC
LK
SD
IO_
D2
SD
IO_
D3
SD
IO_
CK
SD
_C
ARD
_D
ET
EC
T
WIF
I_
BOO
T
UA
RT
2_R
TS
UA
RT
2_T
X
WIF
I_
RESE
T
JT
AG
_T
DO/
SW
O
USE
R_
4
WIF
I_
WAKE
UP
U
A
R
T
1_
T
X
U
A
R
T
1_
R
X
E3_
PW
M
BE
D
_
T
H
E
R
M
IS
T
O
R
_
1
UA
RT
2_C
TS
E1_
FA
N
E2_
FA
N
E3_
FA
N
BE
D
_
T
H
E
R
M
IS
T
O
R
_
1
BE
D
_
T
H
E
R
M
IS
T
O
R
_
3
U
SE
R
_
SP
I2_
N
S
S
U
SE
R
_
SP
I2_
N
S
S
U
SE
R
_
SP
I2_
S
C
K
U
SE
R
_
SP
I2_
M
IS
O
U
SE
R
_
SP
I2_
M
O
S
I
BE
D
_
H
EA
T
_
2
BE
D
_
H
EA
T
_
3
BE
D
_
H
EA
T
_
3
BE
D
_
H
EA
T
_
2
BE
D
_
H
EA
T
_
1
X
_
S
T
O
P
USE
R_
I2
C1_
SC
L
USE
R_
I2
C1_
SD
A
U
SE
R
_
I2
C
1_
S
D
A
U
SE
R
_
I2
C
1_
S
C
L
W_
ST
OP
Y
_
S
T
O
P
Z
_
S
T
O
P
U
_
S
T
O
P
V
_
S
T
O
P
W
_
S
T
O
P
E
1_
F
A
N
E
2_
F
A
N
E
3_
F
A
N
BE
D
_
T
H
E
R
M
IS
T
O
R
_
2
BE
D
_
T
H
E
R
M
IS
T
O
R
_
2
O
T
G
_
D
M
O
T
G
_
D
P
U
SE
R
_
4
S
T
L
IN
K
_
R
ESE
T
U
A
R
T
1_
T
X
U
A
R
T
1_
R
X
S
D
_
C
D
S
D
_
D
A
T
0
S
D
_
D
A
T
1
S
D
_
D
A
T
2
S
D
_
D
A
T
3
S
D
_
C
L
K
S
D
_
C
M
D
U
SE
R
_
1
U
SE
R
_
2
U
SE
R
_
3
X
_
S
T
O
P
Y
_
S
T
O
P
Z
_
S
T
O
P
U
_
S
T
O
P
V
_
S
T
O
P
Y_
RESE
T
X_
DIR
USE
R_
1
USE
R_
2
USE
R_
3
C
7
3
2
.2
U
F
R
7
2
10
K
C
7
5
18
P
F
C
8
1
2
.2
U
F
C
7
4
4
.7
U
F
D
2
7
R
E
D
C
7
7
18
P
F
R
6
8
10
K
C
8
4
10
N
F
C
8
3
100
N
F
U
2
5
S
T
M
32
F
4
0
1
V
E
PE
2
1
PE
3
2
PE
4
3
PE
5
4
PE
6
5
VBA
T
6
P
C
1
3
7
P
C
1
4
8
P
C
1
5
9
VS
S
1
0
V
D
D
1
1
P
H
0
1
2
P
H
1
1
3
NR
ESE
T
1
4
P
C
0
1
5
P
C
1
1
6
P
C
2
1
7
P
C
3
1
8
V
D
D
1
9
VSS
A
2
0
V
R
E
F
+
2
1
V
DD
A
2
2
PA
0
2
3
PA
1
2
4
P
C
8
6
5
P
C
9
6
6
PA
8
6
7
PA
9
6
8
PA
1
0
6
9
PA
1
1
7
0
PA
1
2
7
1
PA
1
3
7
2
V
C
AP
_
2
7
3
V
D
D
7
5
P
C
7
6
4
P
C
6
6
3
P
D
1
5
6
2
P
D
1
4
6
1
P
D
1
3
6
0
P
D
1
2
5
9
P
D
1
1
5
8
P
D
1
0
5
7
P
D
9
5
6
P
D
8
5
5
PB
1
5
5
4
PB
1
4
5
3
PB
1
3
5
2
PB
1
2
5
1
PA14
76
PA15
77
PC
10
78
PC
11
79
PC
12
80
PD
0
81
PD
1
82
PD
2
83
PD
3
84
PD
4
85
PD
5
86
PD
6
87
PD
7
88
PB3
89
PB4
90
PB5
91
PB6
92
PB7
93
BOO
T0
94
PB8
95
PB9
96
PE0
97
PE1
98
VSS
99
VD
D
100
VC
AP1
48
PB10
47
PE15
46
PE14
45
PE13
44
PE12
43
PE11
42
PE10
41
PE9
40
PE8
39
PE7
38
PB2
37
PB1
36
PB0
35
PC
5
34
PC
4
33
VD
D
50
VSS
49
PA3
26
VSS
27
VD
D
28
PA4
29
PA5
30
PA6
31
PA7
32
PA
2
2
5
VS
S
7
4
R
6
9
1
M
J
2
2
C
7
1
100
N
F
Y
1
25
M
H
Z
1
2
3
4
C
6
9
10
N
F
C
8
0
100
N
F
C
8
5
10
N
F
D
6
ES
D
A
5
V
3
L
2
1
3
S
W
2
1
3
4
2
C
7
2
100
N
F
R
7
1
10
K
R
7
0
220
R
C
7
9
1
U
F
S
W
1
1
3
4
2
C
7
8
100
N
F
C
7
0
100
N
F
J
2
3
C
O
N
-2
x2
0
1
2
3
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
3
2
3
3
3
4
3
5
3
6
3
7
3
8
3
9
4
0
4
C
8
2
100
N
F
GSPG3103161450SG
