Multi-input embedded GUI library
AN3311
10/58
Doc ID 18209 Rev 1
Figure 3.
I/O expander hardware configuration on the STM3210C-EVAL
AM0
8
449v1
Y-
1
INT
2
A0/Data
A0/Data Out
Out
3
4
5
VC
VCC
6
Data
Data in
7
IN0
8
IN1
9
GN
GND
10
10
IN2
11
11
IN3
12
12
X+
13
13
Vio
Vio
14
14
Y+
15
15
X-
16
16
U7
ST
STMPE81
811
Y-
1
INT
2
A0/Data
A0/Data Out
Out
3
4
5
VC
VCC
6
Data
Data in
7
IN0
8
IN1
9
GN
GND
10
10
IN2
11
11
IN3
12
12
X+
13
13
Vio
Vio
14
14
Y+
15
15
X-
16
16
U8
ST
STMPE81
811
R5
R56
10
10K
+3V
+3V3
I2C devic
device address:0x8
address:0x8 2
I2C devic
device address:0x8
address:0x88
+3V
+3V3
+3V
+3V3
R5
R57
100
100K
R5
R58
100
100K
TouchS
TouchS
TouchScreen_X-
TouchScreen_X-
TouchS
TouchS
TouchScreen_Y-
TouchScreen_Y-
EXP
EXP_I
_IO2
EXP
EXP_I
_IO3
EXP
EXP_I
_IO4
EXP
EXP_I
_IO5
EXP
EXP_I
_IO6
EXP
EXP_I
_IO7
EXP
EXP_I
_IO8
EXP
EXP_I
_IO9
EXP
EXP_I
_IO1
O10
EXP
EXP_I
_IO1
O11
EXP
EXP_I
_IO1
O12
EXP
EXP_I
_IO1
R160
R160
10
10K
R15
R159
0
+3V
+3V3
R3
R37
10
10K
R164
R164
10
10K
+3V
+3V3
C8
C89
100n
100nF
C9
C90
100n
100nF
PB6
PB7
PB1
B14
IO_Expander_SCK
IO_Expander_SDA
IO_Expander_INT
SCLK
SCLK
SDAT
SDAT
SCLK
SCLK
SDAT
SDAT