[sdiy] TOG Substitute - CPLD

[ASSI]

On Monday 15 December 2003 17:00, Scott Gravenhorst wrote:
> Curious, how expensive are the CPLD devices you used?  and
> how expensive is the programmer?  Is a CPLD like a PROM or
> does it need to be loaded with data each time it's powered up?

CPLD are starting around $5 in single quantity, development systems 
with programming facilities from $50 (or less if used). For the most 
common families DIY programming circuits compatible with the (free) 
software are available.

Todays CPLD are mostly like EEPROM, they retain their programming, are 
re-programmable and are live on power up. Most families are even 
in-system programmable, which means you can alter their content in the 
application board provided that you did not use the programming pins 
for something else.


Achim.
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