Pin number
Pin name
Signal name
STM32 GPIO
Function
27
DOWN
KEY_DOWN
PA15
PA11
Joystick down direction (active low)
28
SO
SPIB_MISO
PB14
SPI master in/slave out
29
SI
SPIB_MOSI
Flash memory SPI master out/slave in
30
SCLK
SPIB_SCK
PB13
Flash memory SPI serial clock
31
SCLK
SPIB_SCK
Flash memory SPI serial clock
32
-
-
-
Not connected
33
INT
INT
PA10
PA12
PB12
PC6
Reserved for touch panel
34 - 38
-
-
-
Not connected
1. STM32 GPIO for
,
2. STM32 GPIO for
,
,
and
.
3. STM32 GPIO for
.
4. STM32 GPIO for
5. STM32 GPIO for
6. STM32 GPIO for
,
7. STM32 GPIO for
.
8. STM32 GPIO for
.
9. STM32 GPIO for
10. STM32 GPIO for
UM2750
ST morpho connectors (CN2 and CN3)
UM2750
-
Rev 2
page 20/31