Which i2c (or spi) driver should I use for segment lcd 1:5 duty, 1:3 bias?

[konstantinnikon]

There is a segmented lcd. 1/5 duty, 1/3 bias, waveform type b. 5 outputs com and 12 segment.

Can I use drivers for 1/6, 1/8 duty (mux) for such a display? Can I use PCF8536, PCF8537 or PCF 8545?

Or only on 1/5 duty (mux) will approach?

Help me choose a micro-powered driver, which has minimal consumption.

[darioarias]

Hello Konstantin,

The drivers you mentioned do not have a native configuration for handling an LCD with those specifications (1:5 Mux), you can simply try not connecting one of the backplanes  and use the configuration 1:6, however this approach has its drawback since the driver will still working as 1:6 meaning that each backplane will use 1/6 of the total period, and at the end there will be a dead time of 1/6 of the total period

If you are looking for micro-powered driver my recommendation would be PCF8551 with a minimal current consumption, or the PCF85176 / 176AUG. In order to choose the best driver is necessary to take in consideration other parameters related with your end application, like  the LCD voltage, desired communication protocol or voltage of the driver.

Regards,

Darío

[zafarobad]

Hello Dario !

Do you have sample code of PCF85176 segment lcd driver ? 

[konstantinnikon]

Thank you!