 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
MPXM2202GS 数据表(PDF) 110 Page - Motorola, Inc |
|
|
|||||||||||||||||||||||||||||
MPXM2202GS 数据表(HTML) 110 Page - Motorola, Inc |
|
|
110 / 670 page  AN1611 2–74 Motorola Sensor Device Data www.motorola.com/semiconductors DIVIDE INC RSHIFT ; Increase the right counter LSR PRESHI2 ROR PRESHI ; Right shift the high byte ROR PRESLO ; Right shift the low byte LDA RSHIFT CMP NO_SHIFT ; If the right shift counter >= NO_SHIFT BHS ENDDIVIDE ; End the shifting JMP DIVIDE ; otherwise continue the shifting ENDDIVIDE LDA PRESLO STA PTEMPLO RTS ****************************************** * * * Timer service interrupt * * Alternates the Port data and * * backplane of LCD * * * ****************************************** TIMERCMP STA TEMP2 ; Push Accumulator COM PORTC ; Port C = – (Port C) COM PORTB ; Port B = – (Port B) COM PORTA ; Port A = – (Port A) LDA START_TIME ; Start to count down the hold time CMP #$FF ; if START_TIME = FF BNE SKIP_TIME JSR CHECK_HOLD SKIP_TIME BSR COMPRGT ; Branch to subroutine compare register LDA TEMP2 ; Pop Accumulator RTI ****************************************** * * * Check whether the hold time * * of crash impact is due * * * ****************************************** CHECK_HOLD DEC HOLD_CNT LDA HOLD_CNT CMP #$00 ; Is the hold time up? BNE NOT_YET LDA #$00 ; If yes, STA PLMA ; stop buzzer LDA #$FF ; Set HOLD_DONE to FF indicate that the STA HOLD_DONE ; hold time is up CLR START_TIME ; Stop the counting down of hold time NOT_YET RTS ****************************************** * * * Subroutine reset * * the timer compare register * * * ****************************************** COMPRGT LDA TCNTHI ; Read Timer count register STA TEMPTCNTHI ; and store it in the RAM LDA TCNTLO STA TEMPTCNTLO ADD #$4C ; Add 1D4C H = 7500 periods STA TEMPTCNTLO ; with the current timer count LDA TEMPTCNTHI ; 1 period = 2 us ADC #$1D STA TEMPTCNTHI ; Save the next count to the register STA OCMPHI1 LDA TSTATUS ; Clear the output compare flag LDA TEMPTCNTLO ; by access the timer status register STA OCMPLO1 ; and then access the output compare RTS ; register ****************************************** * * * Determine which is the next * * acceleration value to be display * * * ****************************************** MAXVALUE LDA PTEMPLO CMP MAXACC ; Compare the current acceleration with BLS OLDMAX ; the memory, branch if it is <= maxacc BRA NEWMAX1 OLDMAX LDA HOLD_DONE ; Decrease the Holdtime when CMP #$FF ; the maximum value remain unchanged Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
