LCD Question

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Dritech

Joined Sep 21, 2011
901

nsaspook

Joined Aug 27, 2009
13,087
It should work just fine but some of the clone controllers are slower than others (compared to a good HD44780 clone) so the delays might have to be tweaked if the setup and hold time were optimized to a faster chip.
 

atferrari

Joined Jan 6, 2004
4,764
Prior software, check if the hardware is compatible.

1 - Check in your current module what pins are connected to backlight [anode / cathode], likely one of these combinations:

15 A / 16 K (1 & 2 used for ???)

1 A / 2 K (15 & 16 maybe used for DATA)

Can you check that with a multimeter fitted with diode check function? That would be enough.

2 - Check the datasheets offered and make sure which one matches your current layout.

3 - Beware of "generics" where Optrex's (or whatever) is offered with the datasheet of Displaytech's (or whatever). I am afraid of this being the case. (204A-GC-BC-3LP / 204A-CC-BC-3LP?) Different results from a unique search...

4 - If for any reason you go for other brands / models (old ones) prior all that check if pins in the PCB are numbered sequentially from 1 to 16 as in yours and not "16 15 1 2 3 4 5 6 ...". (This comes from when they added backlight capability to the initial 14 pins module designs).

Be well.
 
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