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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MC68HC705P9CS датащи(PDF) 108 Page - Freescale Semiconductor, Inc |
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MC68HC705P9CS датащи(HTML) 108 Page - Freescale Semiconductor, Inc |
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108 / 160 page  Timer Technical Data MC68HC705P9 — Rev. 4.0 108 Timer MOTOROLA 9.6 Interrupts The following timer sources can generate interrupts: • Input capture flag (ICF) — The ICF bit is set when an edge of the selected polarity occurs on the input capture pin. The input capture interrupt enable bit, ICIE, enables ICF interrupt requests. • Output compare flag (OCF) — The OCF bit is set when the counter value matches the value written in the output compare registers. The output compare interrupt enable bit, OCIE, enables OCF interrupt requests. • Timer overflow flag (TOF) — The TOF bit is set when the counter value rolls over from $FFFF to $0000. The timer overflow enable bit (TOIE) enables timer overflow interrupt requests. Table 9-3 summarizes the timer interrupt sources. 9.7 I/O Registers The following registers control and monitor the operation of the timer: • Timer control register (TCR) • Timer status register (TSR) • Timer registers (TRH and TRL) • Alternate timer registers (ATRH and ATRL) • Input capture registers (ICRH and ICRL) • Output compare registers (OCRH and OCRL) Table 9-3. Timer Interrupt Sources Source Local Mask Global Mask Priority (1 = Highest) ICF Bit OCF Bit TOF Bit ICIE Bit OCIE Bit TOIE Bit I Bit 3 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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