In SX Microcontrollers, SX/B Compiler and SX-Key Tool, tdg8934 wrote:

I have not been able to find anything on the Parallax forums on the ST2225A (and almost nothing on Google too). It looks like a neat chip. Since it appears to be an SPI type chip, you might want to read about my posting with another similar SPI chip called the LC7932M found on an AD-501-B 16x16 LED matrix board from [url=http://www.Futurlec.com]www.Futurlec.com[/url] . 
 

I went through the same struggles in learning how to interface to an SPI LED type chip. You will need to spend some time reading and re-reading through the ST2225A datasheet and see how it compares. 

 

Here is a link to the work I did on the AD-501-B board (w/ LC7932M chips) for the SX-28. There is also a link within that link for original work done on a BS2 chip by Parallax. 

 

[url=http://forums.parallax.com/forums/default.aspx?f=7&m=199459]http://forums.parallax.com/forums/default.aspx?f=7&m=199459[/url]

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