Confusion in STM32l4 data sheet Mismatch between Table 2 and Table 137 Table 2: R9VI doesn't have LCD-TFT Table 137: R9VI Has LCD-TFT Please check and let me know it is confusing for us

MPIPA.1 · ‎2020-03-21

PFA for data sheet i have attached here

Imen GH · ‎2020-03-30

Hello,

I confirm the confusion in datasheet and I will raise this error internally to take in consideration.

Regards

Imen

MPIPA.1 · ‎2020-04-07

Hi,

Any update on this?

Regards,

Mukund

Imen GH · ‎2020-04-07

Hello,

Yes, We will correct the error in the coming release of the datasheet .

Best regards

MPIPA.1 · ‎2020-04-07

Hi

Can you confirm R9VI has LTDC or not?

It is very urgent for us because of this we are not able to start our project.

Regards,

Mukund

Raouf · ‎2020-04-07

Hi Mukund,

Can you please precise which is the intended interface to be used in your application? Is it parallel RGB? if yes, which one (RGB565, RGB666, …)?

To answer you I can say that: yes the L4R9VI doesn't have full LTDC interface (external RGB pins) that's why it is stated No in table 2, but it has internal LTDC peripheral that can be used WITH MIPI-DSI interface to drive an external DSI display. So with LTDC+DSI you can drive your external display (if it is a MIPI-SDI), but with LTDC only you can't.

So the L4R9VI belongs to the L4R9x lines that have LTDC+DSI.

So to summarize: If your display is parallel (RGBxxx) , then you can't drive it with LTDC using L4R9VI, but if it is a MIPI-DSI display then you can drive it with LTDC+MIPI-DSI

Hope this is clear :)

Kind Regards,

RBEN