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單片機(jī)波形發(fā)生器報(bào)告_課程設(shè)計(jì)報(bào)告-文庫吧資料

2024-08-18 14:18本頁面
  

【正文】 6,0x74,0x72,0x70, 0x6e,0x6c,0x6a,0x68,0x66,0x64,0x62,0x60, 0x5e,0x5c,0x5a,0x58,0x56,0x54,0x52,0x50, 0x4e,0x4c,0x4a,0x48,0x46,0x44,0x42,0x40, 0x3e,0x3c,0x3a,0x38,0x36,0x34,0x32,0x30, 0x2e,0x2c,0x2a,0x28,0x26,0x24,0x22,0x20, 0x1e,0x1c,0x1a,0x18,0x16,0x14,0x12,0x10, 0x0e,0x0c,0x0a,0x08,0x06,0x04,0x02,0x00 }。 uchar code sintab[256]=//正弦波的數(shù)字量表 { 0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96, 0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae, 0xb1,0xb4,0xb7,0xba,0xbc,0xbf,0xc2,0xc5, 0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8, 0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9, 0xea,0xec,0xee,0xef,0xf1,0xf2,0xf4,0xf5, 0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd, 0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd, 0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6, 0xf5,0xf4,0xf2,0xf1,0xef,0xee,0xec,0xea, 7 0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda, 0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7, 0xc5,0xc2,0xbf,0xbc,0xba,0xb7,0xb4,0xb1, 0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99, 0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80, 0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69, 0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51, 0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a, 0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27, 0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16, 0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a, 0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02, 0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02, 0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09, 0x0a,0x0b,0x0d,0x0e,0x10,0x11,0x13,0x15, 0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25, 0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38, 0x3a,0x3d,0x40,0x43,0x45,0x48,0x4c,0x4e, 0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66, 0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80 }。 uint s,p。 sbit s8=P1^7。 sbit s6=P1^5。// sbit s4=P1^3。//P1 口內(nèi)部自帶上拉電阻,因此外部的輕觸按鍵要接地 sbit s2=P1^1。具體解法: 連 a; 連 b; 連 c; 連 d; 連 e; 連 f; 連 g; 連 h(或 dp) 至于 8 兩個(gè)腳是內(nèi)部相連的,接 VCC。 nA (Typ) ? Low Input Offset Voltage: 177。 GND:地。 VREF:基準(zhǔn)電壓( 10~10V)。 IOUT IOUT2: DAC 電流輸出端。 XFER:傳送控制信號,低電 1 平有效。 CS:片選信號,低電平有效。所以這個(gè)芯片的應(yīng)用很廣泛 ,關(guān)于 DAC0832 的引腳功能如下: D0~D7:數(shù)字信號輸入端。 DAC0832 輸出的是電流,一般要求輸出是電壓,所以還必須經(jīng)過一個(gè)外接的運(yùn)算放大器轉(zhuǎn)換成電壓。 XTAL2:來自反向振蕩器的輸出。在 FLASH 編程期間,此引腳也用于施加 12V 編程電源( VPP)。 /EA/VPP:當(dāng) /EA 保持低電平時(shí),則在此期間外部程序存儲器( 0000HFFFFH),不管是否有內(nèi)部程序存儲器。在由外部程序存儲器取指期間,每個(gè)機(jī)器周期兩次 /PSEN 有效。如果微處理器在外部執(zhí)行狀態(tài) ALE 禁止,置位無效。此時(shí), ALE 只有在執(zhí)行 13 MOVX, MOVC 指令是 ALE 才起作用。然而要注意的是:每當(dāng)用作外部數(shù)據(jù)存儲器時(shí),將跳過一個(gè) ALE 脈沖。在平時(shí), ALE 端以不變的頻率周期輸出正脈沖信號,此頻率為振蕩器頻率的 1/6。 ALE/PROG:當(dāng)訪問外部存儲器時(shí),地址鎖存允許的輸出電平用于鎖存地址的地位字節(jié)。 RST:復(fù)位輸入。當(dāng) P3 口寫入 “1”后,它們被內(nèi)部上拉為高電平,并用作輸入。 P2 口在 FLASH 編程和校驗(yàn)時(shí)接收高八位地址信號和控制信號。 P2
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