[sdiy] FPGAs

[ASSI]

On Friday 28 January 2011, Rainer Buchty wrote:
> > Do you mean that they lost STATE when powered down
> 
> Yes. FPGAs are SRAM technology, unless having internal configuration
> EPROMs (which is a minority). You need to boot them, either via an
> external boot ROM or from a microcontroller.

No. :-)  Actel ProASIC FPGA (formerly Gatefield, now Microsemi) use non-
volatile switch cells for their configuration and the older Actel series use 
ANti-Fuses (so these are only one-time-programmable).  But the majority of 
FPGA is SRAM-based, unless you count the CPLD in (which are using internal 
EEPROM mostly).


Achim.
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