piclist 1997\09\16\173222a >
Thread: LCD "busy" signal
picon face BY : N STEENKAMP [M.ING E&E] email (remove spam text)


I'm currently working with a 2x16 display and I have opted to not read
the display and simply wait the maximum time (The application is not
time critical, so I save one IO). But just to check: You should not read
the busy flag between the two 4 bit operations, it is only valid after
the whole operation is completed.

I have the Hitachi LCD display modules data book here with me and it
sucks!!  The translation is deplorable plus its full of errors.  They
should really consider a better translator.


See also: www.piclist.com/techref/lcds.htm?key=lcd
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