Regarding FPGA and Microcontrollers

[rajesh6821]

Hello friends,
I am working on FPGA's. I would like know when to use FPGA'S and when to use microcontrollers? Tell me the exact differences betwween two in the reliability and other aspects?

 

[keith1200rs]

I think this has been asked before!

https://www.edaboard.com/threads/26691/

Keith

 

[keith1200rs]

That is incorrect. Both microcontrollers and FPGAs are reprogrammable and can be used in different designs.

Keith

 

[zel]

its depend on your design. if you used a lot of logic combination, then it is better to use FPGA.

 

[keith1200rs]

I think that misunderstands the difference. FPGAs are logic devices but with registers (and memory) which means they can also perform sequential tasks. However, FPGAs can perform many tasks in parallel using logic and therefore at high speed.

A microcontroller is a sequential device and so quite slow by comparison. The peripherals of a microcontroller are implemented in hardware and so reasonably fast (eg UART) but microcontrollers cannot perform logic functions at hardware speeds. Any logic requiring any speed would need to be done outside the microcontroller.

Keith