I found an interesting LCD Dispaly, which can be
connected to controllers using only two I/O Pins.
Usually it's connected just like any standard LCD Display - using
4 Data pins, RS,RW and E.
On the back of this Display you'll find a solder bridge, that
allows you to bring it to so called serial mode.
In serial mode you only need 2 Pins instead of 7 Pins a normal LCD display needs.
In serial mode you will just have to connect 5 Volt Power supply
, SID (Serial Input Data) and SCLK (Clock Line) to operate the
Optionally you can use more I/O Pins to switch display
illumination on/off or to read from the display by using SOD (Serial Output Data) .
I made a driver and a small demp programm for the ETHERNUT
board and Nut/Os.
You can find it in our Download section
A datasheet can also be found in our Download section
The display currently costs about 20 €,
More Information on the Display can be found at the Webpages of
Electronic Assembly GmbH
I purchased the Display from Conrad Elektronik .
( Part No. 181863-14 )