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MPXM2202GS 数据表(PDF) 112 Page - Motorola, Inc |
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MPXM2202GS 数据表(HTML) 112 Page - Motorola, Inc |
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112 / 670 page  AN1611 2–76 Motorola Sensor Device Data www.motorola.com/semiconductors STARTTEN CLRX ; Start to search for ten digit LOOP10 LDA DECLO ; acceleration = acceleration – 10 SUB TENLO STA DECLO LDA DECHI SBC TENHI STA DECHI INCX BCC LOOP10 ; if acceleration >= 10 continue the DECX ; loop, otherwise end LDA DECLO ; acceleration = acceleration + 10 ADD TENLO STA DECLO LDA DECHI ADC TENHI STA DECHI LDA $0300,X ; Output the last second digit EOR SIGN ; Display the sign STA PORTB CLRX ; Start to search for the last digit LDA DECLO ; declo = declo – 1 TAX LDA $0300,X ; Output the last digit EOR #$01 ; Add a decimal point in the display STA PORTA CLI ; Enable Interrupt again ! RTS ****************************************** * * * This subroutine provides services * * for those unintended interrupts * * * ****************************************** SWI RTI ; Software interrupt return IRQ RTI ; Hardware interrupt TIMERCAP RTI ; Timer input capture TIMERROV RTI ; Timer overflow SCI RTI ; Serial communication Interface ; Interrupt ORG $3FF2 ; For 68HC05B16, the vector location FDB SCI ; starts at 3FF2 FDB TIMERROV ; For 68HC05B5, the address starts FDB TIMERCMP ; 1FF2 FDB TIMERCAP FDB IRQ FDB SWI FDB RESET Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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