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Very very low power 120 segments LCD drivers ?

Discussion in 'Electronic Components' started by Robert Lacoste, Mar 2, 2004.

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  1. Hi,

    I need to drive a 120-segments custom LCD glass (4-way multiplexed) with a
    as low as power as possible, I mean significantly under 10µA (target is 3 to
    5µA), with of course a very low cost solution. I know it is possible (I've
    competitors products achieving 2µA on my desk), but up to now I didn't found
    the good driver chip :

    - Dedicated low cost LCD driver chips (Holtec, Rohm) are more in the 30-40µA
    range
    - Philips chips seems in the 20-30µA range, but are far more expensive
    - Software-based drive of such a display could be possible with a
    microcontroller clocked at 32KHz, but I didn't dound any micro with a sub
    10µA power consumption when running at 32KHz (Microchip nanowatt are more in
    the 15µA, Motorola seems in the 100µA, etc).

    I'm sure there is THE solution somewhere, but which one is it ? Is ASIC the
    only answer ?

    Many thanks for your help...

    Cheers,
    Robert
     
  2. Tilmann Reh

    Tilmann Reh Guest

    Have a look at the chips from Seiko-Epson, they are *very* low
    power and might match your needs.

    --
    Dipl.-Ing. Tilmann Reh
    Autometer GmbH Siegen - Elektronik nach Maß.
    http://www.autometer.de

    ==================================================================
    In a world without walls and fences, who needs Windows and Gates ?
    (Sun Microsystems)
     
  3. Andreas

    Andreas Guest

    Hi Robert,

    if you need a µC anyway, have a look at TIs MSP430. Very low power,
    available with up to 160-LCD-segment-driver.

    Andreas
     
  4. Andreas

    Andreas Guest

    Hi Robert,

    if you need a µC anyway, have a look at TIs MSP430. Very low power,
    available with up to 160-LCD-segment-driver.

    Andreas
     
  5. Thanks to all for your answers !

    Robert
     
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