stm32u073k8 No VLCD pin

[ShimiaoWang]

I'm using the LCD of the STM32U073K8, but the program failed to initialize the LCD. After checking, I found that the STM32U073K8 doesn't have the VLCD pin. Is the STM32U073K8 not compatible with the LCD peripheral? Or are there other settings?

[KDJEM.1]

Hello @ShimiaoWang;

Thank you for sharing this interesting use case.

I will check this internally and I get back to you with more details as soon as possible.

Internal ticket number: 225971 (This is an internal tracking number and is not accessible or usable by customers).

Thank you.

Kaouthar

[ShimiaoWang]

Hi,KDJEM.1

Thank you for your reply. May I ask if there has been any progress on this issue?

[AScha.3]

Hi,

So 32 pin case has no Vlcd pin.

But if pin not present...no cap here possible.

So you picked the only case without vlcd pin. 

Take the next one ...with vlcd pin.

[KDJEM.1 · Accepted solution]

Hello @ShimiaoWang ;

First of all I apologize for my late reply. I confirm that the LCD functionality is not guaranteed without proper VLCD connection.

Thank you.

Kaouthar

[waclawek.jan]

I'd say, in that case, the DS should not advertise this package to support LCD, in Table 1.

Unless VLCD is connected to VDD internally in this package; in which case this fact has to be documented properly.

JW