verilogA 计数器
时间: 2023-07-27 22:07:16 浏览: 172
以下是一个简单的 Verilog-A 计数器的示例代码:
```
module counter (input clk, output reg [7:0] count);
always @(posedge clk) begin
if (count == 8'hFF) begin
count <= 8'h00;
end else begin
count <= count + 1;
end
end
endmodule
```
该模块具有一个时钟输入和一个 8 位输出计数器。在每个时钟上升沿时,计数器会自动递增。当计数器达到最大值(255)时,它将被重置为零。您可以根据需要更改计数器的位宽和最大计数值。
相关问题
verilog同步复位计数器代码
Sure! Here's an example of a synchronous reset counter written in Verilog:
```verilog
module sync_reset_counter(
input wire clk,
input wire rst,
output reg [7:0] count
);
always @(posedge clk) begin
if (rst) begin
count <= 8'h00; // Reset the count to 0
end
else begin
count <= count + 1; // Increment the count
end
end
endmodule
```
In this code, we define a module called `sync_reset_counter` that takes in a clock signal (`clk`), a reset signal (`rst`), and outputs an 8-bit count value (`count`). Inside the `always` block, we use the `posedge` keyword to trigger the following code on the rising edge of the clock.
If the reset signal (`rst`) is asserted (active low), we set the count value to 0 (`8'h00`). Otherwise, we increment the count value by 1 (`count + 1`).
Note that this is a basic example and can be modified to fit your specific requirements.
Verilog74161六进制计数器模块
以下是 Verilog 代码实现一个六进制计数器模块:
```verilog
module hex_counter(
input clk, // 时钟信号
input rst, // 复位信号
output reg [5:0] count // 输出计数值,六位二进制数
);
always @(posedge clk or posedge rst) begin
if (rst) begin
count <= 6'h0; // 复位计数器
end else begin
case(count)
6'h0: count <= 6'h1;
6'h1: count <= 6'h2;
6'h2: count <= 6'h3;
6'h3: count <= 6'h4;
6'h4: count <= 6'h5;
6'h5: count <= 6'h6;
6'h6: count <= 6'h7;
6'h7: count <= 6'h8;
6'h8: count <= 6'h9;
6'h9: count <= 6'ha;
6'ha: count <= 6'hb;
6'hb: count <= 6'hc;
6'hc: count <= 6'hd;
6'hd: count <= 6'he;
6'he: count <= 6'hf;
6'hf: count <= 6'h10;
6'h10: count <= 6'h11;
6'h11: count <= 6'h12;
6'h12: count <= 6'h13;
6'h13: count <= 6'h14;
6'h14: count <= 6'h15;
6'h15: count <= 6'h16;
6'h16: count <= 6'h17;
6'h17: count <= 6'h18;
6'h18: count <= 6'h19;
6'h19: count <= 6'h1a;
6'h1a: count <= 6'h1b;
6'h1b: count <= 6'h1c;
6'h1c: count <= 6'h1d;
6'h1d: count <= 6'h1e;
6'h1e: count <= 6'h1f;
6'h1f: count <= 6'h0;
default: count <= 6'h0; // 防止出错
endcase
end
end
endmodule
```
该模块包含一个时钟信号和一个复位信号作为输入,以及一个六位二进制计数值作为输出。每当时钟信号上升沿到来时,计数器将递增一次。当复位信号为高电平时,计数器将被重置为零。计数器的计数范围为 0-31,对应六进制数 0-1f。