Sorry twitchy, I'm having ADSL problems at the moment, and I accidently deleted your post instead of approving it!, so I'm re-posting it for you - moderator.
I want to use pic16f877 with a parallel lcd display (those based on hd44780). I use a schematic very similar to this one : , as you can see the pic is connected directly to the display pins. A friend argued with me, that i needed some current limiting resistors in order for the lcd to work , yet i saw quite a few schematics using that kind of LCD in which the PIC was wired directly to the LCD. I suppose the controller integrated in the lcd is fine with those kind of currents, but i still wonder, do i need any resistors to limit the current in my case ? Also can you suggest a parallel lcd with a nice datasheet, that has some electrical details about the display, most of the stuff i found only has physical dimensions and nothing else ?
I want to use pic16f877 with a parallel lcd display (those based on hd44780). I use a schematic very similar to this one : , as you can see the pic is connected directly to the display pins. A friend argued with me, that i needed some current limiting resistors in order for the lcd to work , yet i saw quite a few schematics using that kind of LCD in which the PIC was wired directly to the LCD. I suppose the controller integrated in the lcd is fine with those kind of currents, but i still wonder, do i need any resistors to limit the current in my case ? Also can you suggest a parallel lcd with a nice datasheet, that has some electrical details about the display, most of the stuff i found only has physical dimensions and nothing else ?