LQFP144 pinout overlap

[luchiann]

Posted on December 10, 2016 at 20:57

So it happens that i have an overlaping pins if I try to connect an sdram 16Mx16bit an an 24bid RGB LCD. Will there be any major complication if I connect overlaping LCD bit to ground? Do i have to cange software initialization for this?

Thanks

[Oliver Beirne]

Posted on December 13, 2016 at 16:25

Hi

Luchian.Mihai.001

I have moved this post to the

https://community.st.com/community/stm32-community/stm32-forum?sr=search&ampsearchId=1f075d14-1117-4f25-85a1-96ea3fb8cda9&ampsearchIndex=0

where product related questions are posted.

Thanks

Oli

[waclawek.jan]

Posted on December 13, 2016 at 19:36

Will there be any major complication if I connect overlaping LCD bit to ground?

I don't know what sort of LCD are you using,  you omit data bits which determine only color information (i.e. there is no initialization sequence or control seqences through those bits) then you simply will have reduced number of colors. That effect is more pronounced with pins of higher bit number. It's more appropriate to connect such pin to its neighbour (e.g. B4 to B5) rather than to ground it.

Do i have to cange software initialization for this?

Don't initialize the pins which you don't use.

JW