In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:

Do you have a datasheet or at least a model # of the display ?

If it is just the LCD glass without a controller, then you need to activate the segments with AC current. This means using two pins and making one high and the other low, then wait a short time, then make them switch states (low, high) then wait a short time again. And repeat that sequence for each segment that you want visable.

If you use DC you will ruin the display after a short time because the liquid will break down. 

Usually the bare displays have a common (or a number of common) terminals, and then segment terminals. Very similar to a multiplexed LED display.

The current is very low. On the order of uAmps. I usually use 100K resistors from the SX pins to the LCD pins. 

I have found it to be very hard to get a good display. Either you can see the segments that are NOT to be visable, or you get a dim display. You have to play around with the voltage levels and frequency and duty-cycle to find the best combination.

Bean.

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