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Message

HD44780 4-bit mode (was Re: LCD & Keypad selection)

2004-11-29 by Graham Davies

--- In AVR-Chat@yahoogroups.com, Eric <erichards@c...> wrote:

> most LCD displays will do a
> four bit mode as well as 8 bit

That's because most LCD modules use the HD44780 controller.

> But I think on a four bit mode
> you loose a function, not been
> able to make your own character.

No, that's not true. You don't lose anything. Not even speed as you 
still have to wait for the controller to catch up with the MCU.

> so that gets it down to 7, D1 to
> D4, !enable, R/!W, and register select.

Yes, that's right.

Graham.

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