Dff创建D触发器

eachanm

于 2023-05-12 09:31:19 发布

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分类专栏： HDLBits题目文章标签： verilog

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该文章描述了如何构建一个D-flip-flop，这是一种在时钟信号正沿更新状态的存储电路。D-flip-flop是通过使用时钟驱动的always块由逻辑综合器生成的，其组合逻辑部分仅是一条连接线。提供的Verilog代码示例展示了如何在模块中实现一个简单的D-flip-flop，输入为时钟和数据，输出为寄存器Q。

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A D flip-flop is a circuit that stores a bit and is updated periodically, at the (usually) positive edge of a clock signal.

D flip-flops are created by the logic synthesizer when a clocked always block is used A D flip-flop is the simplest form of "blob of combinational logic followed by a flip-flop" where the combinational logic portion is just a wire.

Create a single D flip-flop.

module top_module (
    input clk,    // Clocks are used in sequential circuits
    input d,
    output reg q );//

    
    always@ (posedge clk)
        begin
           q <= d; 
        end

endmodule