JKFFE Primitive

The JKFF primitive allows you to program a register as an edge-triggered JK flipflop.

Note: When the ENA (clock enable) input is high, the flipflop passes a signal that is dependent on the J and K inputs to Q. When the ENA input is low, the state of Q is maintained, regardless of the J or K inputs.

For devices that do not support clock enable, logic synthesis generates logic equations containing flipflops with clock enables. These logic equations correctly emulate the logic specified in the project.

Note: For information about Quartus^® Prime primitive instantiation, go to Using a Quartus^® Prime Logic Function.