MAX7219原理及其应用

200312——LED/64/BCD88RAMLEDMAX7219BCD18LED1MAX72191.1MAX7219MAX7219DINCLKLOAD1616DIN,CLKCLKMAX721916LOAD16MAX7219MAX72191.2MAX7219MAX7219241DINDIG0DIG7LEDLOADSEGASEGGSEGDpISETDOUTCLKV+GNDSEGDpSEGASEGCSEGDDOUTMAX7219123456789101112242322212019181716151413DINDIG0DIG4GNDDIG6DIG2DIG3DIG7GNDDIG5DIG1LOADCLKSEGFSEGBSEGGISETSEGEV+1MAX72191.3MAX7219MAX72192LED8BROM88RAM8RSETV+8D15D12D11D8D7D0DOUTLOADCSDINCLKLSBSEGASEGGSEGDpDIG0DIG78MSB2MAX721916//16D7D0RAMD8D11RAMD12D15416LOADB200312=0MAX721D0=120FHD0=0MAX7219D0=1MAX7219LED30AHD0D3LED40BHD0D307H18509H88LEDBCD-B6RAM0108HDIG0DIG72MAX7219MAX72192.1MAX72198LEDMAX72198LEDDINCLKLOADP0P3pFP0DINCLKLOAD10kÙMAX72193ORG0000HMOVSP#50HLCALLMAX0MAX7219MAX7219P1.0P1.1P1.2ISETDINLOADCLKGNDGNDSEGAGSEGDpDIG0DIG78810kV++5V8LED11812139419803138LEDLOOPLCALLDISPSJMPLOOPMAX7219MAX0MOVA#0BHMOVR2#07HLED8LCALLYWMOVA#0AHMOVR2#0FHLCALLYWMOVA#09HMOVR2#0FFHBCDLCALLYWMOVA#0CHMOVR2#01HLCALLYWRETDISPMOVR0#40HMOVR1#01HMAX7219RAM0MOVR3#08HLOOP1MOVA@R0MOVR2AMOVAR1LCALLYWINCR0INCR1MAX7219RAMDJNZR3LOOP1RETYWLCALLSENDMAX721916MOVAR2LCALLSENDCLRP1.1NOPNOPSETBP1.1RET200312(2)4ISETDINLOADCLKGNDGNDDIG07SEGAGSEGDpMAX7219V+20k+5V1918112139(1)DIG07SEGAG416LEDORG0000HMOVSP#50HLCALLMAX0MAX7219LOOPLCALLDISPSJMPLOOPMAX7219MAX0MOVR2#0BHMOVR3#07HMOVR5#07HLCALLYWMOVR2#0AHMOVR3#0FHMOVR5#0FHLCALLYWMOVR2#09HMOVR3#0FFHMOVR5#0FFHLCALLYWMOVR2#0CHMOVR3#01HMOVR5#01HLCALLYWRETDISPMOVR0#40HMAX72191MOVR1#48HMAX72192MOVR2#01HMAX7219RAM0MOVR6#08HLOOP1MOVA@R0MOVR3AMOVA@R1MOVR5ALCALLYWINCR0INCR1INCR2DJNZR6LOOP1RETYWMOVAR2LCALLSENDMAX721916MOVAR5LCALLSENDMOVAR2LCALLSENDMOVAR3LCALLSENDCLRP1.1NOPNOPSETBP1.1RETSENDMOVR4#08H8LOOP2CLRP1.2RLCAMOVP1.0CNOPNOPNOPSETBP1.2DJNZR4LOOP2200312ìPD16682A1.1MSP430F14xTIMSP430F14xMSP43016RISCCPU1616277DDFTDDFTMSP430F14xMCU60kBFlash2kBRAM1216A/DPWMUSARTLCDI/OI/OFlash5RETMAX7219MAX7219LOADMAX7219CPULED11997.621998.832002.7±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±