• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 61 subscribers
  • Views 1065 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TLC5926 Daisy chain wiring

bob sagat
Prodigy 10 points
Other Parts Discussed in Thread: TLC5926

I wanted to confirm the correct sequence for chaining 4 TLC5926 drivers together.  Is  SDO of chip 1 into SDI of chip 2, etc with SDO of the last chip going back into microcontroller?  Also, are CLK and LE connected in parallel to the same pin of the microcontroller with OE set to ground (for constant driving) or OE for each chip connected to an individual pin on the microcontroller to allow multiplexing.  What I am trying to do is connect 4 TLC5926 to an arduino in order to controller 64 LEDS. Thx!

  • 0
    TI__Guru 66590 points

    Hello Bob,

    You are right with the connection you mention above. Connect the SDO of the 1st with the SDI of the 2nd, the SDO of the 2nd with the SDI of the 3rd, the SDO of the 3rd with the SDI of the 4th and the SDO of the 4th with an input of the microcontroller.

    Connect CLK and LE of all parts in parallel (make sure that the length of these lines is minimized to minimize signal run time).

    I would also connect the OE pins in parallel to a micro port to make sure that you can also go into special mode and get the error status from the IC.

    Best regards,
    Brigitte