單片機課程設計-基于at89c52單片機的led點陣顯示電子鐘設計-文庫吧資料
2025-01-22 11:58本頁面
【正文】 0x00},/*2 CHAR_32 */{0x00,0x00,0x70,0x30,0x78,0x38,0x08,0x2C,0x08,0x26,0x88,0x23,0xF8,0x31,0x70,0x30},/*3 CHAR_33 */{0x00,0x00,0x30,0x18,0x38,0x38,0x88,0x20,0x88,0x20,0xC8,0x31,0x78,0x1F,0x30,0x0E},/*4 CHAR_34 */{0x00,0x00,0x00,0x07,0xC0,0x07,0xE0,0x24,0x30,0x24,0xF8,0x3F,0xF8,0x3F,0x00,0x24}, /*5 CHAR_35 */{0x00,0x00,0xF8,0x19,0xF8,0x39,0x88,0x21,0x88,0x20,0x88,0x31,0x08,0x1F,0x08,0x0E},/*6 CHAR_36 */{0x00,0x00,0xE0,0x0F,0xF0,0x1F,0x98,0x31,0x88,0x20,0x98,0x31,0x18,0x1F,0x00,0x0E},/*7 CHAR_37 */{0x00,0x00,0x38,0x00,0x38,0x00,0x08,0x3F,0xC8,0x3F,0xF8,0x00,0x38,0x00,0x08,0x00},/*8 CHAR_38 */{0x00,0x00,0x70,0x1C,0xF8,0x3E,0x88,0x23,0x08,0x21,0x88,0x23,0xF8,0x3E,0x70,0x1C},/*9 CHAR_39 */{0x00,0x00,0xE0,0x00,0xF0,0x31,0x18,0x33,0x08,0x22,0x18,0x33,0xF0,0x1F,0xE0,0x0F},/*: CHAR_3A */{0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x30,0xC0,0x30,0xC0,0x30,0x00,0x00,0x00,0x00}}。void init_ds1302()。void set_ds1302(uchar *P1302)。void write_Byte(uchar tdata)。uchar read_Byte()。idata uint m,z,l,d。sbit ACC7=ACC^7。 //定義DS1302引腳sbit ds1302_SCLK=P3^6。sbit ds1302_RST=P3^5。sbit e2=P3^2。（outputs (active LOW)）12：Gnd電源地 （ground (0 V)）1819：使能輸入端、低電平有效 (enable inputs (active LOW))2023:地址輸入端 (address inputs)24：VCC電源正 (positive supply voltage) AT89C52單片機微處理器采用AT89C52系列單片機，AT89C52單片機是這幾年在我國非常流行的單片機，是一種帶8K字節(jié)閃存器的高性能單片機，可擦除存儲器可以反復擦除100次，具有低功耗，高性能的特點，并且可與工業(yè)標準的MSC51指令集和輸出管腳相兼容，對于本設計需要實現(xiàn)的功能，完全可勝任[7]3 硬件電路設計 元器件表 元件名稱 型號 個數(shù) 用途 單片機 AT89C52 1 控制核心LED點陣 88 16 顯示電路總線收發(fā)器 74HC245 4 信號功率放大實時時鐘電路 DS1302 1 記時集成塊 74HC154 4 行掃描 排阻 10K*8 1 上拉電阻 4 軟件部分設計includedefine uchar unsigned chardefine uint unsigned intdefine set_out(X) X = 1define clr_out(X) X = 0sbit e0=P3^0。當其余的使能輸入端置低時，地址輸出將會跟隨應用的狀態(tài)。該使能門電路包含兩個“邏輯與”輸入，必須置為低以便使能輸出
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