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CHAPTER 16 8-/16-BIT PPG TIMER
8+8-bit PPG output operation mode
The 8 + 8-bit PPG output operation mode causes the PPGC of the 2-channel modules to operate as an 8-bit
prescaler and the underflow output of the PPGC to operate as the count clock of the PPGD.
Table 16.1-3 shows the interval times in this mode.
Table 16.1-3 Interval Times in 8+8-bit PPG Output Operation Mode
Count Clock Cycle
1/φ(41.7 ns)
2/φ(83.3 ns)
2
2
/φ(167 ns)
3
2
/φ(333 ns)
4
2
/φ(667 ns)
9
2
/HCLK(128µs)
HCLK: Oscillation clock
φ : Machine clock
The parenthesized values are provided when the oscillation clock operates at 4 MHz and the machine clock operates
at 24 MHz.
284
PPGC
Interval Time
Output Pulse Time
8
1/φ to 2
/φ
2/φ to 2
9
2
2/φ to 2
/φ
2
/φ to 2
2
10
3
2
/φ to 2
/φ
2
/φ to 2
3
11
4
2
/φ to 2
/φ
2
/φ to 2
4
12
5
2
/φ to 2
/φ
2
/φ to 2
9
10
2
/HCLK to
2
/HCLK to 2
17
HCLK
2
/HCLK
Interval Time
9
16
/φ
1/φ to 2
/φ
10
17
/φ
2/φ to 2
/φ
11
2
18
/φ
2
/φ to 2
/φ
12
3
19
/φ
2
/φ to 2
/φ
13
4
20
/φ
2
/φ to 2
/φ
18
9
/
2
/HCLK to
25
2
/HCLK
PPGD
Output Pulse Time
17
2/φ to 2
/φ
2
18
2
/φ to 2
/φ
3
19
2
/φ to 2
/φ
4
20
2
/φ to 2
/φ
5
21
2
/φ to 2
/φ
10
26
2
/HCLK to 2
/
HCLK
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