基于單片機(jī)的信號產(chǎn)生電路的設(shè)計(jì)-資料下載頁
2025-07-17 09:32本頁面
【導(dǎo)讀】本系統(tǒng)是基于AT89S52單片機(jī)的數(shù)字式低頻信號發(fā)生器。采用AT89S52單片機(jī)作為控制核心，外圍采用數(shù)字/模擬轉(zhuǎn)換電路、穩(wěn)壓電路、運(yùn)放電路、按鍵和LED顯示燈電路等。通過按鍵控制可產(chǎn)生方波、鋸齒波、三角波、正弦波等，同時(shí)用LED顯示燈指示對應(yīng)的波形。其設(shè)計(jì)簡單、性能優(yōu)良，可用于多種需要低頻信號源的場所，具有一定的實(shí)用性。單片機(jī)主要應(yīng)用于測控領(lǐng)域，用以實(shí)現(xiàn)各種測試和控制功能?，F(xiàn)代電子領(lǐng)域中，單片機(jī)的應(yīng)用正在不斷的走向深入，這必將導(dǎo)致傳統(tǒng)控制與檢測技術(shù)的日益革新。因此，單片機(jī)技術(shù)開發(fā)和應(yīng)用水平已逐步成為一個(gè)國家工業(yè)發(fā)展水平的標(biāo)志之一。又內(nèi)部采用總線結(jié)構(gòu)，減少了芯片之間的連線，這大大提高了單片機(jī)的可靠性與抗干擾能力。其邏輯控制功能及運(yùn)行速度均高于同一檔次的微機(jī)。單片機(jī)大量用于攜帶式產(chǎn)品和家用消費(fèi)類產(chǎn)品，低電壓和低功耗尤為重要。目前，,，功耗降至μA級,一粒鈕扣電池就可長期使用。
【正文】 王新賢. 通用集成電路速查手冊. 山東科學(xué)技術(shù)出版社, 2002. 31附錄1元件清單標(biāo)號標(biāo)注DAC0832U1LM324U2MC1403U31KR11KR21KR31KR41KR51KR61KR71KR810KR920KR1020KR111KRi電位器 10KRWC1C2Ci1Ci2Ci322UFCi410UFCi510UFCi6LEDL1LEDL2LEDL3LEDL4LEDL5AT89S52 U0 37附錄2程序清單KEY1 BIT KEY2 BIT KEY3 BIT KEY4 BIT 。按鍵KEY1:鋸齒波 按鍵KEY2:三角波 按鍵KEY3: 正弦波 。按鍵KEY4: 方波。 ORG 0000H LJMP MAIN ORG 0030HMAIN:MOV SP,50HMOV DPTR,7FFFHMOV P2,00HMOV A,00HMOVX @DPTR,ASCAN_KEY1:MOV A,P1 ANL A,0FH CJNE A,0EH,SCAN_KEY2 LJMP B1SCAN_KEY2:MOV A,P1 ANl A,0FH CJNE A,0DH,SCAN_KEY3 LJMP B2SCAN_KEY3:MOV A,P1 ANl A,0FH CJNE A,0BH,SCAN_KEY4 LJMP B3SCAN_KEY4:MOV A,P1 ANl A,0FH CJNE A,07H,SCAN_KEY1 LJMP B4。利用dac0832產(chǎn)生鋸齒波。B1:CLR SETB SETB SETB LP: MOV A,00H MOV DPTR,4000H MOVX @DPTR,A LP1: INC A MOV P2,A CJNE A,0FFH,LP1 LJMP SCAN_KEY1。利用dac0832產(chǎn)生三角波。B2: CLR SETB SETB SETB UP: MOV A,00HUP1: INC A MOV P2,A NOP NOP CJNE A,0F0H,UP1DOWN:DEC A MOV P2,A NOP NOP CJNE A,00H,DOWN LJMP SCAN_KEY2。利用dac0832產(chǎn)生正弦波。B3: MOV R1,00H 。取表格初值 。在表格里取數(shù)送到指定地址///////////////////// LOOP1:CLR SETB SETB SETB MOV A,R1 MOV DPTR,SETTAB MOVC A,@A+DPTR MOV DPTR,4000H MOVX @DPTR,A MOV P2,A INC R1。表格加一 CJNE R1,0FFH,LOOP1SETTAB: 。正弦表格///////////////////////////////////// DB 80H,83H,86H,89H,8DH,90H,93H,96H DB 99H,9CH,9FH,0A2H,0A5H,0A8H,0ABH,0AEH DB 0B1H,0B4H,0B7H,0BAH,0BCH,0BFH,0C2H,0C5H DB 0C7H,0CAH,0CCH,0CFH,0D1H, 0D4H,0D6H,0D8H DB 0DAH,0DDH,0DFH,0E1H,0E3H, 0E5H,0E7H,0E9H DB 0EAH,0ECH,0EEH,0EFH,0F1H, 0F2H,0F4H,0F5H DB 0F6H,0F7H,0F8H,0F9H,0FAH, 0FBH,0FCH,0FDH DB 0FDH,0FEH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH DB 0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FEH,0FDH DB 0FDH,0FCH,0FBH,0FAH,0F9H, 0F8H,0F7H,0F6H DB 0F5H,0F4H,0F2H,0F1H,0EFH, 0EEH,0ECH,0EAH DB 0E9H,0E7H,0E5H,0E3H,0E1H, 0DEH,0DDH,0DAH DB 0D8H,0D6H,0D4H,0D1H,0CFH, 0CCH,0CAH,0C7H DB 0C5H,0C2H,0BFH,0BCH,0BAH, 0B7H,0B4H,0B1H DB 0AEH,0ABH,0A8H,0A5H,0A2H, 9FH, 9CH, 99H DB 96H, 93H, 90H, 8DH, 89H, 86H, 83H, 80H DB 80H, 7CH, 79H, 78H, 72H, 6FH, 6CH, 69H DB 66H, 63H, 60H, 5DH, 5AH, 57H, 55H, 51H DB 4EH, 4CH, 48H, 45H, 43H, 40H, 3DH, 3AH DB 38H, 35H, 33H, 30H, 2EH, 2BH, 29H, 27H DB 25H, 22H, 20H, 1EH, 1CH, 1AH, 18H, 16H DB 15H, 13H, 11H, 10H, 0EH, 0DH, 0BH, 0AH DB 09H, 08H, 07H, 06H, 05H, 04H, 03H, 02H DB 02H, 01H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 01H, 02H DB 02H, 03H, 04H, 05H, 06H, 07H, 08H, 09H DB 0AH, 0BH, 0DH, 0EH, 10H, 11H, 13H, 15H DB 16H, 18H, 1AH, 1CH, 1EH, 20H, 22H, 25H DB 27H, 29H, 2BH, 2EH, 30H, 33H, 35H, 38H DB 3AH, 3DH, 40H, 43H, 45H, 48H, 4CH, 4EH DB 51H, 55H, 57H, 5AH, 5DH, 60H, 63H, 66H DB 69H, 6CH, 6FH, 72H, 76H, 79H, 7CH, 80H LJMP SCAN_KEY3。利用dac0832產(chǎn)生方波。B4: CLR SETB SETB SETB MOV A,0FFH MOV P2,A LCALL DELY MOV A,00H MOV P2,A LCALL DELY LJMP SCAN_KEY4DELY:MOV R6,10H MOV R7,0EDH NOPDL1:DJNZ R7,DL1DL2:DJNZ R6,DL2 RETEND
研究報(bào)告相關(guān)推薦
鄂ICP備17016276號-1