When considering new design it is always good to have several references on how to build circuit or interface one or another peripheral device. This one helps interfacing Nokia 3510i LCD display if you need to output graphical information.
Board has ability to adjust voltages for variable targets, including3V, 3.3V, 3.8V, 5V. It is programmable via standard ISP programmer dongle connected to LPT printer interface. Also there are 8 programmable LEDs and 4 buttons for custom applications. It is good reference for your new project or just grab this one as there is also a PCB image available.