AN3
311
Schematics
Doc
ID
1
8209
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9.7 I/O
peripherals
Figure 32.
I/O peripherals
AM0
8
516v1
R9
0
10K
R9
1
10K
R9
2
10K
R9
3
10K
R8
9
10K
+3V3
C
5
6
100nF
C
5
5
100nF
C
5
4
100nF
C
5
3
100nF
C
5
2
100nF
R108
100
COMMON
5
Selection
2
DWON
3
LEFT
1
RIGHT
4
UP
6
U15
MT008-A
R102
0
R101
0
R100
0
R99
0
R98
0
JOY_SEL
JOY_DOWN
JOY_LEFT
JOY_RIGHT
JOY_UP
To IO expander
1
2
LD3
Red
1
2
LD2
Orange
1
2
LD4
Blue
1
2
LD1
Green
R94
330
R95
680
R96
680
R97
680
LED4
LED3
LED1
LED2
PD7
PD13
PD3
PD4
1
2
3
4
5
CN10
VB334
BNC1
1
2
3
4
5
CN11
VB334
BNC2
SB4
R112
50
R113
50
SB3
PA7
PB0
EEPROM_SCK
EEPROM_SDA
E0
1
E1
2
E2
3
VSS
4
SDA
5
SCL
6
WC
7
VCC
8
U17
M24C64-WMN6
+3V3
R107
10K
JP17
C91
100nF
PB6
PB7
MEMS_SCK
MEMS_SDA
MEMS_INT1
MEMS_INT2
VDD_IO
1
GND
2
Reserved
3
GND
4
GND
5
VDD
6
CS
7
INT1
8
INT2
9
GND
10
Reserved
11
SDO
12
SDA
13
SCL
14
U16
LIS302DL
+3V3
R106
10K
+3V3
C92
100nF
PB7
PB6
To IO expander
R117
220K
1
4
3
2
B2
WKUP
C59
[N/A]
+3V3
R109
100
R114
4K7
1
4
3
2
B3
USER
C57
100nF
+3V3
R110
100
R115
4K7
1
4
3
2
B4
Tamper
C58
100nF
+3V3
R111
100
R116
330
R104
0
R105
0
Anti_Tamper
WAKEUP
User_Button
3
1
C
P
9
B
P
PA0
1
3
2
RV1
10K
R103
0
+3V3
Potentiometer
C60
10nF
PC4
R86
1K
Joy
s
tick
LED
s
BNC
EEPROM
MEM
S
B
u
tton
Potentiometer