New member
Hi all
Will the CFAH4004 work with the 4 bit interface?
I have successfully worked with a 2 * 20 and a 4 * 20 but dont seem to be able to get the 4 * 40 working.
There seem to be a few differences between the specs (mainly minor timing) but still i dont seem to be able to get even one half working.
As i understand it, the 40*4 is just a 20 * 4 twice- that is 2 seperate controllers (hence the 2 enable lines).:)
Do i need to go to 8 bit wide data bus interface.
Looking for additional LCD resources? Check out our LCD blog for the latest developments in LCD technology.

CF Tech

We have tested the CFAH4004AYYHJP series with the EDP-1, which uses 4-bit interface, so it should work.

If you hook the two enables together, the top half (40x2) should be the same as the bottom half (40x2).