Do i connect the 6 tlc5940 chips to the microduino's 5v power supply pin?
and do i power the leds with separate power supply or connect them to the microduino's 3.3v pin.
about the way the chips are conneted, sin sends the data bite and fills up the chip register with the last chip first, all the other pin connection, like thr xlat and blank are pulse of high and low, so work for all the chips. i have rather bad explanation but i do think i understand.
The pinouts are shown in the "Basic Use" sketch in the TLC5940.
I don't think you understood my explanation about the TLC5940 or you didn't read the datasheet or both.
I have already told you which pins a SPI device requires but you have not asked me which pins on a 1284 correspond to the pins you need to use the TLC5940.
You have not posted the datasheet for the 1284 so how do you know how to connect it to a 1284? Did you find a schematic somewhere showing how to connect the TLC5940 to a 1284 ?
I have read the tlc5940 full version datasheet, not the summary and I have also read the atmega 1284p data sheet. perhaps i didn't understand you, please bear with me.
In this case the protocol is SPI which requires MISO (Master In-Slave Out), MOSI ( Master Out Slave In) SCK (Serial Clock) and SS (chip select)
The TLC5940 requires all of these EXCEPT MISO because it sends no data to the uC , only receives.