51单片机读取2764 EEPROM数据代码示例

#include <reg51.h>

// \u5B9A\u4E49\u63A7\u5236\u5F15\u811A sbit A0 = P1^0; sbit A1 = P1^1; sbit A2 = P1^2; sbit A3 = P1^3; sbit A4 = P1^4; sbit A5 = P1^5; sbit A6 = P1^6; sbit A7 = P1^7;

sbit OE = P2^0; // \u8F93\u51FA\u542F\u80FD sbit CE = P2^1; // \u80F8\u786C\u542F\u80FD

unsigned char data; // \u5B58\u50A8\u8BFB\u53D6\u5230\u7684\u6570\u636E

void delay() { unsigned int i, j; for(i = 0; i < 1000; i++) { for(j = 0; j < 100; j++) { } } }

void main() { OE = 1; // \u7981\u6B62\u8F93\u51FA CE = 1; // \u7981\u6B62\u80F8\u786C

// \u8BBE\u7F6E\u5730\u5740
A0 = 0;
A1 = 0;
A2 = 0;
A3 = 0;
A4 = 0;
A5 = 0;
A6 = 0;
A7 = 0;

CE = 0; // \u542F\u80FD\u80F8\u786C
OE = 0; // \u5141\u8BB8\u8F93\u51FA

delay(); // \u7B49\u5F85\u80F8\u786C\u54CD\u5E94\u65F6\u95F4

data = P0; // \u8BFB\u53D6\u6570\u636E

OE = 1; // \u7981\u6B62\u8F93\u51FA
CE = 1; // \u7981\u6B62\u80F8\u786C

while(1) {
    // \u5C06\u8BFB\u53D6\u5230\u7684\u6570\u636E\u8FDB\u884C\u5904\u7406
    // ...
}

}

\u5728\u4EE5\u4E0A\u4EE3\u7801\u4E2D\uff0c\u9996\u5148\u5B9A\u4E49\u4E86\u63A7\u5236\u5F15\u811A A0-A7\u3001OE \u548C CE\uff0c\u7136\u540E\u5728 main() \u51FD\u6570\u4E2D\u8BBE\u7F6E\u4E86\u8BFB\u53D6\u7684\u5730\u5740\uff0c\u5E76\u542F\u80FD\u80F8\u786C\u548C\u8F93\u51FA\u3002\u7136\u540E\u901A\u8FC7\u5EF6\u65F6\u7B49\u5F85\u80F8\u786C\u54CD\u5E94\u65F6\u95F4\uff0c\u6700\u540E\u8BFB\u53D6\u6570\u636E\u5E76\u8FDB\u884C\u5904\u7406\u3002

\u8BF7\u6CE8\u610F\uff0c\u4EE5\u4E0A\u4EE3\u7801\u53EA\u4F9B\u53C2\u8003\uff0c\u5177\u4F53\u7684\u5B9E\u73B0\u53EF\u80FD\u56E0\u786C\u4EF6\u5E73\u53F0\u548C\u7F16\u8BD1\u5668\u800C\u6709\u6240\u4E0D\u540C\u3002\u4F60\u53EF\u80FD\u9700\u8981\u6839\u636E\u4F60\u7684\u5177\u4F53\u60C5\u51B5\u8FDB\u884C\u5F97\u5F53\u7684\u4FEE\u6539\u548C\u8C03\u6574\u3002