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TIMER A
5.6 Pulse width modulation (PWM) mode
Count source
"H"
TAi
pin's
IN
input signal
"L"
"H"
8-bit prescaler's
underflow signal
"L"
"H"
PWM pulse output
from TAi
pin
OUT
"L"
"1"
Timer Ai interrupt
request bit
"0"
fi: Frequency of count source
(f
Fig. 5.6.6 Operation example of 8-bit pulse width modulator
5–46
/f
, f
/f
, f
/f
, or f
/f
)
2
4
16
32
64
128
512
1024
The 8-bit prescaler counts the count source.
The 8-bit pulse width modulator counts the 8-bit prescaler's underflow signal.
Note: The above applies when the reload register's high-order 8 bits (n) = "02
and low-order 8 bits (m) = "02
signal) is selected.
7751 Group User's Manual
1 / f
(m+1)
(2
8
–1)
i
1 / f
(m+1)
i
1 / f
(m+1)
(n)
i
Cleared to "0" when interrupt request is accepted or cleared by software.
" and an external trigger (falling of TAi
16
"
16
pin input
IN
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