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tlc5941 cascading

Dirk deBoer
Prodigy 140 points

how would i select between the different chips i would be using. if it helps im gonna use a tm4c123gxl as controller. im piggybacking 16 of them together. to control 512 leds. ive tried reading the datasheet on it but im getting lost. 

  • 0
    TI__Intellectual 1990 points

    Hi Dirk,

     

    When cascading the devices together, there is no "selection" process. You simply clock in bits to the first device and as you continue clocking in bits they will be pushed on to the next device. So for example with 16 devices each with 16 bits, you have 256 bits total for all devices. The first 16 bits would be for the 16th device, the next 16 for the 15th device, and so on. Once you have 256 bits you would then latch them using XLAT.

     

    Regards,

    Nate