jigshaw
Member level 1
Hello,friends
Recently I got a STN LCD from an old PDA (Sagem).Its product type number is G3246H-FE and there's no datasheet on the Internet.
So I used an oscilloscope to test waveshape on each pin and identifed the digital interface pins.
But its bias was different from STN LCD I ever met.I have used many LCD,every one with constant bias,but this one with changable bias as FR signal change.
Following picture is the bias signal I saw on the oscilloscope.
Can someone tell me how to give bias to this LCD?
Thanks a lot.
![H3246H-FE bias Pin.GIF H3246H-FE bias Pin.GIF](https://www.edaboard.com/data/attachments/8/8071-e36cd4e4da52a61c2fc45f95fc5f7fce.jpg)
Recently I got a STN LCD from an old PDA (Sagem).Its product type number is G3246H-FE and there's no datasheet on the Internet.
So I used an oscilloscope to test waveshape on each pin and identifed the digital interface pins.
But its bias was different from STN LCD I ever met.I have used many LCD,every one with constant bias,but this one with changable bias as FR signal change.
Following picture is the bias signal I saw on the oscilloscope.
Can someone tell me how to give bias to this LCD?
Thanks a lot.
![H3246H-FE bias Pin.GIF H3246H-FE bias Pin.GIF](https://www.edaboard.com/data/attachments/8/8071-e36cd4e4da52a61c2fc45f95fc5f7fce.jpg)