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TLC6C5724-Q1 LED Driver Samples

Siva Sankar Chandika
Prodigy 130 points
Other Parts Discussed in Thread: TLC6C5724-Q1

Hi,

Is it possible to blink LED's by using TLC6C5724-Q1 LED Driver using SPI protocol?

If possible/not by using SPI protocol give us suggestions to blink LED.

we tried with SPI driver it is not responding, please guide us to blink LED.

We are looking forward for your response.

Regards

Siva Sankar Chandika

  • 0
    TI__Expert 5380 points
    Hi Siva,

    May I know the application information? Do you need to blink a specific LED or All LEDs? If it is a specific LED, I would recommend to write GS data using SPI protocol. You plan to blink all the LEDs, i would recommend to toggle the BLANK pin to do so.
  • 0 in reply to Anda Zhang
    Prodigy 130 points

    Hello Anda Zhang,

    Thanks for your suggestion, but we have application specifications mentioned below

    • The drivers are sized to maximum current of 32mA per LEDs. Current for each LED is adjusted through the dot correction function.

     Example: For RED the current needed is 20mA, For GREEN the current needed is 19mA,

    For BLUE the current needed is 7mA.

    As per the data sheet if we go with GS write no control on the current limiting right, Please correct us if we wrong, Give us settings to be made to blink LED.

    (Baurd Rate, Mode: Polarity and Phase and how many bits to be sent from SPI).

    Let us know how to control current in each LED group.

    Regards,

    Siva Sankar Chandika.

  • 0 in reply to Siva Sankar Chandika
    TI__Expert 5380 points
    Hi Siva,

    You are correct! GS data is used to set the PWM duty cycle, DC(individual channel control)/BC (RGB group control) data can be used to set the output current.

    If you want to blink a specific LED, write the GS data to zero to turn off the output channels, write the GS data to setting duty cycle to turn on output channels.

    if you want to blink all the output channels, toggle the blank pin can realize this.

    Regarding the SPI command, each time 288-bit data should be sent into the device. It is not the same with standard Address + Data SPI protocol.