24C08 verilog

以下是一个简单的Verilog代码示例，用于读取和写入24C08 EEPROM芯片中的数据。请注意，这只是一个示例，具体实现可能因芯片型号和具体要求而有所不同。

module eeprom_24c08 (
  input wire clk,
  input wire rst,
  input wire sda,
  output reg scl,
  input wire [2:0] addr,
  inout reg [7:0] data,
  input wire we_n
);

// 状态定义
localparam IDLE = 0, START = 1, ADDR = 2, DATA = 3, STOP = 4;

// 初始化状态和变量
reg [2:0] state = IDLE;
reg [8:0] bit_count = 0;
reg [7:0] reg_addr;
reg [7:0] reg_data;

// 模拟 I2C 通信流程
always @(posedge clk) begin
  if (rst) begin
    // 复位状态和计数器
    state <= IDLE;
    bit_count <= 0;
    sda <= 1;
    scl <= 1;
  end else begin
    case (state)
      IDLE: begin
        if (!we_n) begin
          // 写操作
          reg_addr <= addr;
          reg_data <= data;
          state <= START;
        end else begin
          // 读操作
          reg_addr <= addr;
          state <= START;
        end
      end
      START: begin
        sda <= 0;
        scl <= 0;
        state <= ADDR;
      end
      ADDR: begin
        sda <= reg_addr[7 - bit_count];
        bit_count <= bit_count + 1;
        if (bit_count == 8) begin
          bit_count <= 0;
          if (!we_n) begin
            state <= DATA;
          end else begin
            state <= START;
          end
        end
      end
      DATA: begin
        sda <= reg_data[7 - bit_count];
        bit_count <= bit_count + 1;
        if (bit_count == 8) begin
          bit_count <= 0;
          state <= STOP;
        end
      end
      STOP: begin
        sda <= 0;
        scl <= 1;
        if (sda) begin
          // 等待芯片完成操作
          state <= IDLE;
        end else begin
          // 继续发送
          if (!we_n) begin
            reg_addr <= reg_addr + 1;
            if (reg_addr == 0) begin
              // 写入完成
              state <= IDLE;
            end else begin
              state <= START;
            end
          end else begin
            state <= START;
          end
        end
      end
    endcase
  end
end

endmodule

此代码仅供参考，具体实现可能因芯片型号和具体要求而有所不同。