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What is the max number of segments on a static LCD?

Posted: Tue Mar 13, 2018 10:14 pm
by proto
What is the max number of segements a static LCD can support?

Re: What is the max number of segments on a static LCD?

Posted: Wed Mar 14, 2018 9:58 pm
by LCD_Designs
There is no set number that should be exceeded. The more segments, the more I/Os required to drive them. Part of the design question is what type of interface? Spi? I2C, 4:1 multiplex, static drive?

Static drive will give a really good contrast, but cannot support to many pins due to the number of leads coming off the LCD.
4:1 has less contrast, but can handle more segments.
If you are going over say 80 segments, it is best to go with Spi.