AVR340: Direct Driving of LCD Using General Purpose IO
Many products require a Liquid Crystal Display (LCD) Interfaced to a
microcontroller (MCU). This application note describes the operation of a
Multiplexed LCD. Also discussed are electrical waveforms and connections
needed by an LCD, as well as a C-program to operate the LCD. The result is an
excellent low-cost combination and a starting point for many products.
Although multiplexed LCDs are initially more complex to get operational, they are
the lowest cost displays and requires the lowest number of I/O pins of all glass
LCDs (glass refers to the lack of an additional onboard LCD driver chip).
Today, I found this great manual, which implies the picture on the display can be quite rich.
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