參數(shù)資料
型號: MC68HC05P9AVP
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: HCMOS Microcontroller Unit
中文描述: HCMOS微控制器
文件頁數(shù): 94/158頁
文件大?。?/td> 1106K
代理商: MC68HC05P9AVP
Timer
94
Timer
MOTOROLA
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 21
summarizes the timer interrupt sources.
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 21. 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
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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