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LML LCD datasheet, cross reference, circuit and application notes in pdf format. Hitachi Dot Matrix Liquid Crystal Display (LCD) Module was developed to .. Applicable only for replacement: LM, LM, LM, LM, LM, LM . referred to as character LCD modules) is almost always 14 pins. Table 1 shows the basic pinout. You may find that some displays have.

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Any help is appreciated Cheers Aaron. David, Assuming you are using a standard character lcd I would suggest you check the initialization sequence carefully.

Any help will be most appreciated. I usually get a series of faint grey dots in a grid where the characters are displayed. I use a lcd with pic18f just like you and microchip C compiler.

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LCD Control pins. | Microchip

I finally ran accross the answer in the microchip data sheet. I will have to look at that. Forum Themes Elegant Mobile. When I wrote the lcd software I was in trouble too with port E, because I configured it like input, so they didn’t change state. Initializing the display this way alwayswill prevent the display from screwing up when resets occur, and is more efficient than analyzing particular PIC register bits to determine conditions of reset, and figuring out the frailties of the LCD protocol.


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Essentials Only Full Version. Forums Posts Latest Posts. Guest Super Member Total Posts: Insert wait states after display clear.

If anything is not just right on start-up all you will get is the boxes or dots. I am new at this but I had the same problem. You can use port e but it is also an analog input. I hope this helps Blusky. Increase your latency to initialize, IE display clear, and reset or whatever they’re called were spec’d at 1. Page has the table of codes for setting analog ports as digital.

LM020L Datasheet

I think the better thing is to create your own lcd functions using a generic lcd datasheet. I’m pretty sure it’s a predecessor to a 16F84 with 4 bit transfer.

I use the Optrex manual www. I hope this helps Blusky aspforum. I can send you code examples if you wish.

I looked at the spec sheet and it said that Port E was a digital input output port but datzsheet get any functions to work on these datasheft. The LCD doens not operate like this but if I move the bits to a different port it works.


Debug breakpoints automatically disabled Future of PIC32 16F88 cannot set internal oscillator frequency beyond I’ve tried relying on the start up delay 72 msecs to allow the LCD to self initialise. Look at page 99 Example initializing port e.

Both were a bit slow on the uptake. If you havent already found the problem.

Had to burn thousands of machine cycles based on 20MHz clock to wait this long! It must not only be set as output but also as digital or setting it as output is useless.

LCD Control pins.

Aside from that, if you’re using the device in nibble mode, and properly initialize it as such, then experience a hardware reset not a power on-resetthe display will still be in 4-bit mode, and may misconstrue information sent to it by the PIC.

Any other ideas what is wrong. Did you configure pins on port E as output? Why does my PIC32 run slower than expected?