what is the minimum mA's "THIS LED" can use?
Common cathode LEDs are not very common and so not many chips are designed to drive them.
Quote from: Grumpy_Mike on May 25, 2011, 06:53 pmCommon cathode LEDs are not very common and so not many chips are designed to drive them.Really? That is all i seem to find when I look at bi-color & RGB LEDs...
and he spells some words wrong
Actually I think Mike is referring to 7-segment LED displays not bi-color LEDs.
his light switches are upside down
I'm not sure it meets all your requirements but the MAX7219 / MAX7221 will allow you to drive 64 LEDs (32 Bi Colour C/C LEDS). You can chain them but depending on your update rate that may not be suitable.
although I've not used it (yet).
If you want individual control of each LED you're going to have to send one command per LED.
This chip is totally unsuitable for the op
What makes it so totally unsuitable?
I'm looking to buy a few LED Driver IC's for an 11*11 LED Bi-color display.
and be @ a reasonable price
That chip handles an 8 X 8 matrix for a single colour. So how are you going to extend it to handle an extra 3 columns and rows and an extra colour? It's internal memory is only 8 X 8.So how do you propose using that chip for this situation?
This is an expensive chip, are you suggesting that he uses three of them?
I was imagining that he would need 4 chips.