參數(shù)資料
型號: MC68HC705P9DW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 11/160頁
文件大?。?/td> 2208K
代理商: MC68HC705P9DW
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
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關PDF資料
PDF描述
MC68HC705P9MS 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, CDIP28
MC68HC705P9CDW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC705P9VS 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, CDIP28
MC68HC705P9S 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, CDIP28
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