Re: I2C/SPI LCD Display Module

Ian McBride wrote:
> 
> I am looking for a cost-effective 128x64 graphics LCD module, with or
> without backlighting, that has a SPI or I2C interface to the controller.
> All the ones I can find have a parallel interface.  Is there such a thing as
> a low-cost serial LCD siaply module?

Scott Edwards Electronics (www.seetron.com) has a couple of serial text/graphics
displays but they're based on RS232. 

If you are prepared to build your own I2C interface, you could use a couple of
Philips PCF8574 (second sourced by TI I think) remote 8 bit I/O port for the I2C
bus. One could be used for the parallel data bus, and the other for the control
lines, and able to turn the display on or off. The PCF8574 chips also have the
ability of sending an interrupt to the controller to indicate that a pin has 
changed state. Of course, you'd have to obtain your own display and interface
the devices to your project.

-- 

Regards
David

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