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I want to use 20x4 LCD without I2C.

conegliano
Associate

I want to use a 20x4 LCD without I2C on the Nucleo-F030R8 board. But many libraries are programmed on the I2C protocol. Is there a 20x4 LCD library that doesn't use I2C?

3 REPLIES 3

You'll need to be much more specific about make, model, manufacturer of said "20x4 LCD"

Link to a data sheet.

Show how it is interfaced?

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MNapi
Senior III

you have to be more specific. I did a lot of those long time ago and it was fun

it has 8 lines of data lines

H/L register select signal pin

H/L read/write signal

H/ L enable signal

see data sheet for the display what you want to display,

use I/O pins to write 0 or 1 then use control pins to send the data to the display very simple

 

 

 

 

PGump.1
Senior

Hi,

I have used MC42005 type displays. Just be aware of their logic voltage levels, and they have specific timing to some of the instructions.

I hope this helps.

Kind regards
Pedro