I'm looking at getting a DEM16217 LCD display for a PIC based project, have read the manual cover to cover and understand most of it - except the funny little graphs, which I think hold the key to what I'm asking....
If I send a set DDRAM instruction via the pins, wait a few u/s then send the character to display, I would expect to see the selected character at the appropriate point on the screen.
Do I have to keep sending this pair of instructions or does the display use "latching" outputs (ie once a character has been set, it does not need to be continuously updated).
I assumed latching outputs since there is a specific instruction to clear the display (whereas if constant refreshing were needed, you could just not send any output for a few cycles and this would effectively clear the screen).
Am I on the right track here?
If I send a set DDRAM instruction via the pins, wait a few u/s then send the character to display, I would expect to see the selected character at the appropriate point on the screen.
Do I have to keep sending this pair of instructions or does the display use "latching" outputs (ie once a character has been set, it does not need to be continuously updated).
I assumed latching outputs since there is a specific instruction to clear the display (whereas if constant refreshing were needed, you could just not send any output for a few cycles and this would effectively clear the screen).
Am I on the right track here?
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