Interfacing 93CX6 Serial EEPROMs to the PIC16C5X
http://www.microchip.com/download/appnote/pic16/00530f.pdf

Using PIC16C5x Microcontrollers as LCD Drivers
http://www.microchip.com/download/appnote/devspec/16c5x/00563c.pdf

http://jap.hu/electronic/lcdif.html
http://jap.hu/electronic/codec.html

http://www.ee.washington.edu/circuit_archive/circuits/PCIR/pcirsw.html