JK-FF
Overview
- Q(t+1)=[(Q' and J) or (Q and K')](t)
| J | K | C | Q(t+1) | state |
|---|---|---|---|---|
| 0 | 0 | ↑ | Q(t) | hold |
| 0 | 1 | ↑ | 0 | reset |
| 1 | 0 | ↑ | 1 | set |
| 1 | 1 | ↑ | Q(t)' | invert |
↑ = rising edge of clock
- J=K=1 may be used for: inverting (frequency divider, counter)
- undefined up to first RESET
- “Toggle”-behavior for J=K=1