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HD44780 customized character

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bianchi77

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How many characters are possible for HD44780 ?
I've tried the 9th character, but didn't work ...
maybe because of the limit $40 to $7F for user defined graphics ?

and each character has 8 segments...
 

bigdogguru

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Re: HD44780 costumized character

How many characters are possible for HD44780 ?

You can store eight 5x8 characters and four 5x10 characters in CGRAM at one time.

I've tried the 9th character, but didn't work ...
maybe because of the limit $40 to $7F for user defined graphics ?

There are 64 bytes of CGRAM storage, with each custom character requires either 8 bytes (5x8) or 16 bytes (5x10).

and each character has 8 segments...

Each requires 8 bytes of storage if it is a 5x8 character.



Hope the info helps,

BigDog
 

bianchi77

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Re: HD44780 costumized character

Thanks for the info ...:)
 

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