Would you like free RAM with that LCD?
Bob Ammerman email (remove spam text)
There have been many threads on the PICLIST regarding interfacing external
RAM to PIC's, preferably without using up every available pin on the PIC.
Today I stumbled onto an interesting solution. I just purchased, from BG
Micro [http://www.bgmicro.com], their item #LCD1015, which is a 128 x 32 _graphics_
LCD display (USD $8.95). This device uses two (Samsung?) KS0108B "RAM
enabled segment drivers", each of which contains 512 bytes of RAM used to
refresh the LCD display. This is actually twice the RAM needed to map to the
whole display (to allow for 'page flip animation and smooth vertical
scrolling). The interface is through an 8 bit data port, plus 5 control
pins. I am not sure yet how fast it is, but is does include an
autoincrementing address counter for sequential access.
I thought this might have some applications :-)
(high performance, high function, low-level software)
See also: massmind.org/techref/io/lcd/pic.htm?key=lcd