R
Robert Lacoste
- Jan 1, 1970
- 0
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
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