Thread: FRC 16 channels of ADC - must we use them all?
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Unread 11-01-2004, 22:36
Jay Lundy Jay Lundy is offline
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Re: FRC 16 channels of ADC - must we use them all?
Quote:
Originally Posted by Rickertsen2
it takes 6 lines in 4-bit mode to implement an HD44780 compatible LCD(4 data + E + RW), and 10 to implement one in 8-bit mode.
Oh yeah.

Actually you need one more for the RS pin, so 7 pins/11 pins. I can see how you might be running out of dig I/O pins if you use 11 of them. If the busy flag isn't important to you you can ground the R/W and use 6 pins/10 pins.

Or you can set up a cheap external circuit to take serial data from the RC and make it parallel. Or you can get a serial LCD.