STMicroelectronics STM32L476G-EVAL - Figure 37. I;O Expander Schematic Diagram

Schematic diagrams UM1855 78/100 DocID027351 Rev 3
Figure 37. I/O expander schematic diagram
625
IO_Expandor
MB1144 B-02
6/24/2015
Title:
Size: Reference:
Date: Sheet: of
A3
Revision:
STM32L476G-EVAL
Project:
Y-
1
INT
2
A0/D at a Out
3
SCLK
4
SDAT
5
VCC
6
Data in
7
IN0
8
IN1
9
GND
10
IN2
11
IN3
12
X+
13
Vio
14
Y+
15
X-
16
U32
STMPE811QTR
I2C device address:0x82
VDD
R239
100K
R228 0
C134
100nF
PG13
PG14
PG15
IOExpan der_ Y+
IOExpan der_ Y-
IOExpan der_ X+
IOExpan der_ X-
IOExpander_INT
I2C_SCL
I2C_SDA
JOY_SEL
JOY_DOWN
JOY_LEFT
JOY_RIGHT
JOY_UP
LED4
GPIO0
1
INT
22
A0
18
SCL
19
SDA
20
VCC
21
A2
24
GPIO7
8
GPIO6
7
GND
9
GPIO5
6
GPIO4
5
GPIO3
4
A1
23
GPIO2
3
GPIO1
2
GPIO8
10
GPIO15
17
GPIO14
16
GPIO13
15
GPIO12
14
GPIO11
13
GPIO10
12
GPIO9
11
TAB
25
U33
STMPE1600QTR
VDD
C132
100nF
Default I2C Address:1000010X
R243 10K
R232 10K
R230 10K
R237
[N/A]
R233
[N/A]
R231
[N/A]
VDD
SmartCard_RST
SmartCard_CMDVCC
SmartCard_3/5V
SmartCard_OFF
R229
100K
IOExpander1
IOExpander2
LED2
BL_Control
EXT_RESET