differences between fpga's and cplds

[eeeraghu]

whats the major differences between fpga's and cpld's

 

[Prasanna Kumar]

see the attached link

 

[Amr El Dieb]

CPLDs are based on array of logic elements that can be routed together to form the complete function, like PLA and PAL.

FPGAs are arrays of logic cells (logic blocks) that are connected through routing channels. each Logic block can implement a complete function of certian number of inputs and produce one output. also FPGA has the advantage of pre-implmented complex blocks such as FIFO, Block memory, DSP blocks, DCM (digital clock manager), Rocket I/O for ethermet communication and so....

from the application point of view. CPLD is very good in small applications such as integrating the random logic on the board on one CPLD chip, glue logic, controlling...but FPGA can be used in more complex applications such as digital communication, optical communication, DSP and consumer electronics.

 

[YUV]

I would like to add some words:
CPLDs
- They are ready to work instantly after turn on;
- Quantity of reprogramming cycles is usually limited.
FPGA
- They need to be initialized after turn on and it takes a time;
- Unlimited quantity of initialization cycles.

 

[Kulprashant]

hi,
cplds will be used whenever the design consists of more combinational circuits like gates and fpgas will be used whenever the design consists of more seqential circuits like memories.

with regards,
kul