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Table 13.
X-NUCLEO-GFX01M2 I/O configuration of ST morpho connector CN3
Pin number
Pin name
Signal name
STM32 GPIO
Function
1 - 2
-
-
-
Not connected
3
I2C_SCL
I2C_SCL
PA12
Reserved for touch panel
4
-
-
-
Not connected
5
I2C_SDA
I2C_SDA
PA11
Reserved for touch panel
6 - 8
-
-
-
Not connected
9
GND
-
-
Ground
10
-
-
-
Not connected
11
RS/SCL
SPIA_SCK
PA5
PB13
Display SPI serial clock
12
-
-
-
Not connected
13
SDO
SPIA_MISO
PA6
PB14
Display SPI master in/slave out
14
-
-
-
Not connected
15
SDI
SPIA_MOSI
PA7
PB15
Display SPI master out/slave in
16
SCLK
SPIB_SCK
PA8
Flash memory SPI serial clock
17
LEFT
KEY_LEFT
PB12
PA11
PA4
Joystick left (active low)
18
-
-
-
Not connected
19
CENTER
KEY_CENTER
PC7
PA8
PA9
PA15
Joystick center (active low)
20
GND
-
-
Ground
21
CS
SPIA_NCS
PA9
PC2
Display SPI chip select active high
22
-
-
-
Not connected
23
CS#
SPIB_NCS
PA8
PC7
PC1
Flash memory SPI chip select active high
24
-
-
-
Not connected
25
WR
SPIA_DCX
PB10
PB14
PA8
Display SPI write enable
26
SI
SPIB_MOSI
PB15
Flash memory SPI master out/slave in
UM2750
ST morpho connectors (CN2 and CN3)
UM2750
-
Rev 2
page 19/31