serial input/output common-cathode display drivers

[cachomachine]

Does anybody knows a chip like the MAX7219 capable to drive common-cathode display?

 

[neiltechspec]

Cmos 4511b

edit: This isn't serial of course - BCD

 

[hippy]

The MAX7219 I believe can drive common cathode displays but won't allow the internal decoding of data values to numbers and bytes written won't control a digit but segments across each digit.

Despite it being promoted as a digit display it's really just an 8x8 matrix display driver so should be common-cathode and common-anode neutral in terms of hardware though its functionality is common-cathode oriented. It should be possible to compensate for that in software.

 

[cachomachine]

Thanks hippy
I tought about that for a while and i believe that this could be true for the row (Segments) (just complement the data) but for the column (digit) a 7219 pull the column (digit) pin HIGH in order to display the row (Segments) data but i don't tink that you can complement the column (digit) Inside the 7219.

 

[hippy]

It should just be a case of connecting anodes to the anode drivers and cathodes to the cathode drivers. Then a matter of working out which bit in the 8 bytes of data lights which display bit.