MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 185
MC68HC908AB32
Manufacturer Part Number
MC68HC908AB32
Description
HCMOS Microcontroller Unit
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AB32.pdf
(392 pages)
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MC68HC908AB32
MOTOROLA
NOTE:
NOTE:
—
Rev. 1.0
TOF — TIMA Overflow Flag Bit
TOIE — TIMA Overflow Interrupt Enable Bit
TSTOP — TIMA Stop Bit
Do not set the TSTOP bit before entering wait mode if the TIMA is
required to exit wait mode.
TRST — TIMA Reset Bit
Setting the TSTOP and TRST bits simultaneously stops the TIMA
counter at a value of $0000.
This read/write flag is set when the TIMA counter resets to $0000 after
reaching the modulo value programmed in the TIMA counter modulo
registers. Clear TOF by reading the TIMA status and control register
when TOF is set and then writing a logic zero to TOF. If another TIMA
overflow occurs before the clearing sequence is complete, then
writing logic zero to TOF has no effect. Therefore, a TOF interrupt
request cannot be lost due to inadvertent clearing of TOF. Reset
clears the TOF bit. Writing a logic one to TOF has no effect.
This read/write bit enables TIMA overflow interrupts when the TOF bit
becomes set. Reset clears the TOIE bit.
This read/write bit stops the TIMA counter. Counting resumes when
TSTOP is cleared. Reset sets the TSTOP bit, stopping the TIMA
counter until software clears the TSTOP bit.
Setting this write-only bit resets the TIMA counter and the TIMA
prescaler. Setting TRST has no effect on any other registers.
Counting resumes from $0000. TRST is cleared automatically after
the TIMA counter is reset and always reads as logic zero. Reset
clears the TRST bit.
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = TIMA counter has reached modulo value
0 = TIMA counter has not reached modulo value
1 = TIMA overflow interrupts enabled
0 = TIMA overflow interrupts disabled
1 = TIMA counter stopped
0 = TIMA counter active
1 = Prescaler and TIMA counter cleared
0 = No effect
Timer Interface Module A (TIMA)
Go to: www.freescale.com
Timer Interface Module A (TIMA)
Technical Data
I/O Registers
185
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