J-K Flip-Flop with Clock Enable and Synchronous Set and Reset

FJKSRE is a single J-K-type flip-flop with J, K, synchronous set (S), synchronous reset (R), and clock enable (CE) inputs and data output (Q). When synchronous set (S) is High, all other inputs are ignored and output Q is set High. (Set has precedence over Reset.) When synchronous reset (R) is High and S is Low, output Q is reset Low. When S and R are Low and CE is High, output Q responds to the state of the J and K inputs, as shown in the following truth table, during the Low-to-High clock (C) transition. When CE is Low, clock transitions are ignored. The default initial state of the flip-flop is zero.

Inputs Output
S R CE J K C Q
1 X X X X 1
0 1 X X X 0
0 0 0 X X X No Chg
0 0 1 0 0 X No Chg
0 0 1 0 1 0
0 0 1 1 0 1
0 0 1 1 1 Toggle

Parameters

Parameter Description Units Default
IC Output initial state.   LOW
CLKTPLH Delay from clock to out high. s DGTDELAY
CLKTPHL Delay from clock to out low. s DGTDELAY
PRETPLH Delay from set to out high. s DGTDELAY
PRETPHL Delay from set to out low. s DGTDELAY
CLRTPLH Delay from reset to out high. s DGTDELAY
CLRTPHL Delay from reset to out low. s DGTDELAY
IN_MODE Inputs mode. IN
OUT_MODE Outputs mode.   OUT
IOMODEL The name of an I/O model, which describes the device‚Äôs loading and driving characteristics.   DGTDEFIOMODEL
POWER_NODE Digital power node name. Is the node used by the interface subcircuits which connect analog nodes to digital nodes.   $G_DPWR
GROUND_NODE Digital ground node name. Is the node used by the interface subcircuits which connect analog nodes to digital nodes.   $G_DGND