NORL (RS Latch)
Asynchronous Reset-Set Latch built from NOR gates.
Model
Operation
The NORL is an active-high RS latch. It maintains its state when both inputs are 0. The
state is changed by pulling either R or S to 1.
| R (Reset) | S (Set) | Q (Next) | Comment |
|---|---|---|---|
| 0 | 0 | Q | Last state |
| 0 | 1 | 1 | Set |
| 1 | 0 | 0 | Reset |
| 1 | 1 | 0 | Disallowed (Both 0) |
| X | — | X | Unknown state |
Equivalent Type Statement
Type=NORL i=R,S o=Q