On 01/23/2020 06:52 PM, R C wrote:
I always wondered why FPGAs are(still?) that popular...
Because you can develop quite a bit of custom logic on a $10
chip. One of my motion controller
boards packs 4 quadrature counters capable of up to 5
million counts/second and 4 PWM generators
with a 40 MHz clock (giving 25 ns pulse width resolution)
plus 16 digital inputs and 8 digital outputs
on one $10 chip.
I could buy a bunch of chips that do all these separate
functions and put them on a board, but that
would end up costing a LOT more than $10.
And, unless you are making millions of devices, a custom
chip with those features would cost
somewhere between $250K and 1 million $ to make the masks.
Even the automakers are using FPGAs in cars. I think it is
the reconfigurability and time to develop
with FPGAs is a big plus.
Jon
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