Scilab Website | Contribute with GitLab | Mailing list archives | ATOMS toolboxes
Scilab Online Help
5.4.0 - Português

Change language to:
English - Français - 日本語 - Русский

Please note that the recommended version of Scilab is 2024.0.0. This page might be outdated.
See the recommended documentation of this function

Ajuda Scilab >> Xcos > palettes > Integer palette > DFLIPFLOP

DFLIPFLOP

D flip-flop

Block Screenshot

Description

That block outputs on Q its input state (D) when the enable input (en) is set and on the rising edge of the clock input (clk). The !Q output is the logical negation of Q. This flip-flop is also known as a delay flip-flop because the state of the input is modified only at the next rising edge of the clock.

The D flip-flop is used as a basic cell of shift-registers.

The truth table of this block is the following:

Non-Rising

where X stands for "indifferent" and Qn-1 is the previous output state of Qn .

Data types

The block supports the following types :

  • Inputs:

    • D: scalar. Scilab's int8 data type only.

    • en: scalar. Scilab's real double.

    • clk: scalar. Scilab's real double.

    A positive input is considered as logical 1, a negative or a null input as logical 0.

  • Outputs : scalar. Scilab's int8 data type.

Default properties

  • always active: no

  • direct-feedthrough: yes

  • zero-crossing: no

  • mode: no

  • regular inputs:

    - port 1 : size [1,1] / type 5

    - port 2 : size [1,1] / type 1

    - port 3 : size [1,1] / type 1

  • regular outputs:

    - port 1 : size [1,1] / type 5

    - port 2 : size [1,1] / type 5

  • number/sizes of activation inputs: 0

  • number/sizes of activation outputs: 0

  • continuous-time state: no

  • discrete-time state: no

  • object discrete-time state: no

  • name of computational function: csuper

See also

Report an issue
<< CONVERT Integer palette DLATCH >>

Copyright (c) 2022-2023 (Dassault Systèmes)
Copyright (c) 2017-2022 (ESI Group)
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Mon Oct 01 17:39:54 CEST 2012