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10.4 TIO (Input/Output-Related 16-Bit Timer)
MULTIJUNCTION TIMERS
10
10-93
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
(4) Single-shot output mode (without correction function)
In single-shot output mode, the timer generates a pulse in width of “ reload 0 register set value + 1” only
once and then stops.
When the timer is enabled (by writing to the enable bit in software or by external input) after setting the
reload 0 register, the counter is loaded with the value that “ the reload 0 register -1” and starts counting
synchronously with the count clock at the next cycle. The counter counts down and when the minimum
count is reached, stops upon underflow.
The F/F output waveform in single-shot output mode is inverted (F/F output level changes from "L" to "H" or
vice versa) at startup and upon underflow, generating a single-shot pulse waveform in width of “ reload 0
register set value + 1” only once.
Furthermore, it is possible to generate an interrupt request and a DMA transfer request (for only the TIO8
and TIO9) upon underflow of the counter.
(5) Delayed single-shot output mode (without correction function)
In delayed single-shot output mode, the timer generates a pulse in width of “reload 0 register set value + 1”
after a finite time equal to “ counter set value + 1” only once and then stops.
When the timer is enabled (by writing to the enable bit in software or by external input) after setting the
counter and reload 0 register, it starts counting down from the counter’s set value synchronously with the
count clock.
The next cycle after the first time the counter underflows, it is loaded with the value that “ the reload 0
register -1” and continues counting down. The counter stops when it underflows next time.
The F/F output waveform in delayed single-shot output mode is inverted (F/F output level changes from "L" to
"H" or vice versa) when the counter underflows first time and next, generating a single-shot pulse waveform in
width of “reload 0 register set value + 1” after a finite time equal to “ first set value of counter + 1” only once.
Furthermore, it is possible to generate an interrupt request and a DMA transfer request (for only the TIO8
and TIO9) upon the first and next underflows of the counter.
(6) Continuous output mode (without correction function)
In continuous output mode, the timer counts down starting from the set value of the counter and when the
counter underflows, it is loaded with the reload 0 register value. Thereafter, this operation is repeated each
time the counter underflows, thus generating consecutive pulses in width of “ reload 0 register set value + 1.”
When the timer is enabled (by writing to the enable bit in software or by external input) after setting the
counter and reload 0 register, it starts counting down from the counter’s set value synchronously with the
count clock and when the minimum count is reached, generates an underflow.
The next cycle after this underflow causes the counter to be loaded with the content of “ the reload 0 register
-1” and start counting over again.
Thereafter, this operation is repeated each time an underflow occurs. To stop the counter, disable count by
writing to the enable bit in software. The timing for reloading to counter is the cycle after underflow.
The F/F output waveform in continuous output mode is inverted (F/F output level changes from "L" to "H" or
vice versa) at startup and upon underflow, generating a waveform of consecutive pulses until the timer stops
counting.
Furthermore, it is possible to generate an interrupt request and a DMA transfer request (for only the TIO8
and TIO9) each time the counter underflows.