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• If a read modify write instruction is issued, "11
• A bit-processing instruction (such as a bit clear) corresponding to each bit can be used for writing to the
STRT and STOP bit to start/stop the counter. However, the bit-processing instructions cannot be used
for reading an operating status. (Note that the status must be in operation if it is read.)
[bit13] EDIR: Measurement end interrupt request flag
The flag indicates that the measurement is completed in the pulse width count mode. A measurement end
interrupt request is generated if this bit is set when the measurement end interrupt request is enabled (bit12:
EDIE=1).
Set when a pulse width count is completed
Set factor
(the measurement result is stored in PWCR0 or PWCR1).
Clear factor
Cleared when PWCR0 or PWCR1 (measurement result) is read.
• Initialized to "0" at resetting.
• This bit is read-only. Writing does not change the bit value.
[bit12] EDIE: Measurement end interrupt request enable bit
This bit controls the measurement end interrupt request in the pulse width count mode as described below.
Disable the measurement end interrupt request output (an interrupt not generated when EDIR
0
is set) [Initial value]
1
Enable measurement end interrupt request output (interrupt is generated if EDIR is set)
• Initialized to "0" at resetting.
• The read / write is possible.
[bit11] OVIR: Counter overflow Interrupt request flag
This flag indicates that the 16-bit up counter has overflowed from "FFFF
counter overflow interrupt request is generated if this bit is set when the counter overflow interrupt request
is enabled (bit10: OVIE = 1).
Set factor
Set when a counter overflow occurs ("FFFF
Clear factor
Cleared by writing 0.
• Initialized to "0" at resetting.
• The read / write is possible. However, only "0" can be written on it. Writing "1" does not change the bit
value.
• The read value by a read-modify-write instruction is always "1", regardless of the bit value.
CHAPTER 10 PWC (Pulse Width Count: Pulse Width Measurement)
" is read regardless of the operation.
B
" to "0000
H
H
" to "0000
").
H
H
" in all modes. A
187
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