MC68HC705P9CDW FREESCALE [Freescale Semiconductor, Inc], MC68HC705P9CDW Datasheet - Page 108

• Manufacturer Part Number: MC68HC705P9CDW
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Timer
9.6 Interrupts
9.7 I/O Registers
Technical Data
108
The following timer sources can generate interrupts:
Table 9-3
The following registers control and monitor the operation of the timer:
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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.
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)
summarizes the timer interrupt sources.
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OCF Bit
Source
TOF Bit
ICF Bit
Table 9-3. Timer Interrupt Sources
Timer
Local Mask
OCIE Bit
TOIE Bit
ICIE Bit
Global
Mask
I Bit
(1 = Highest)
Priority
MC68HC705P9 — Rev. 4.0
3
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