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Graduate II
December 30, 2023
Solved

hv5812 vfd driver function table

  • December 30, 2023
  • 2 replies
  • 1352 views

could someone explain how this chip works this functScreenshot 2023-12-30 01-46-02.pngion table is so confusing to me 

    This topic has been closed for replies.
    Best answer by AScha.3

    AScha3_0-1703945057506.png

    ...seems not difficult, you have to make connections to: (+vpp , vdd, gnd )

    - data in

    - clk

    - strobe

    - blanking

    -> blanking : hi = display off ; lo = display on.

    -> clk : on lo->hi transition data is shifted in; 

    -> strobe :  lo->hi transition data is stored in latch;  lo->hi->lo to store data . 

    So full sequence to show a pattern is:

    ( set data in hi or lo , switch clk lo->hi->lo ;  ) 20 x , for 20 bits /segments ;

    set strobe lo->hi->lo ; = data is on outputs (+ blanking always lo, if you dont want switch off the display)

    2 replies

    Technical Moderator
    December 30, 2023

    Thank you very much for the trust you have placed in the community with your question, but it relates to a device from a manufacturer that is not STMicroelectronics. This can also be seen in the URL on your screenshot. I suspect that the question can be better answered by that supplier.

    Good luck!
    /Peter

    AScha.3Answer
    Super User
    December 30, 2023

    AScha3_0-1703945057506.png

    ...seems not difficult, you have to make connections to: (+vpp , vdd, gnd )

    - data in

    - clk

    - strobe

    - blanking

    -> blanking : hi = display off ; lo = display on.

    -> clk : on lo->hi transition data is shifted in; 

    -> strobe :  lo->hi transition data is stored in latch;  lo->hi->lo to store data . 

    So full sequence to show a pattern is:

    ( set data in hi or lo , switch clk lo->hi->lo ;  ) 20 x , for 20 bits /segments ;

    set strobe lo->hi->lo ; = data is on outputs (+ blanking always lo, if you dont want switch off the display)

    Graduate II
    December 31, 2023

    So just Like the 74hc595 ok