STM32F7 DISCO - LCD_INT

[alan239955_st]

Posted on October 11, 2015 at 14:47

On the STM32F7-DISCO a signal from GPIO Port I13 LCD_INT connects to the 480 x 272 LCD.

The STM32F745xx/STM32F746xx datasheet says that the AF14 mode of this pin is LCD_VSYNC. On the DISCO the LCD_VSYNC is on GPIO Port I9. So the documentation implies a duplication.So what is this PIN? The STM32F7 Cube software sets the pin to AF14... Is the datasheet wrong and this is an interrupt input?

[Nesrine M_O]

Posted on November 02, 2015 at 15:44

Hi  lowit.alan,

1-The STM32F745xx/STM32F746xx datasheet says that the AF14 mode of this pin is LCD_VSYNC. On the DISCO the LCD_VSYNC is on GPIO Port I9. So the documentation implies a duplication.In fact the LCD_VSYNC alternate function is mapped on the PI9 and PI13 pins, so there is no duplication2-This is an interrupt input?Yes, you are right the pin LCD_INT is an interrupt input pin.3-The STM32F7 Cube software sets the pin to AF14 If you speak about the configuration of both PI9 and PI13 as AF14, please note that the issue is reported internally. -Syrine-