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CHAPTER 10 8/16-bit PPG timer
G
8 + 8-bit PPG output mode
The 8 + 8-bit PPG output mode causes the PPG0 of the 2-channel modules (PPG0 and PPG1) to operate as
an 8-bit prescaler and the underflow output of the PPG0 to operate as the count clock of the PPG1.
Table 10.1-3 Interval Times in 8+8-bit PPG Output Operation Mode shows the interval times in this mode.
Table 10.1-3 Interval Times in 8+8-bit PPG Output Operation Mode
Count Clock
Cycle
1/φ (62.5ns)
2/φ (125ns)
2
2
/φ (250ns)
3
2
/φ (500ns)
4
2
/φ (1µs)
9
2
/HCLK
(128µs)
Oscillation clock
φ: Machine clock
The parenthesized values are provided when the oscillation clock operates at 4 MHz and the machine
clock operates at 16 MHz.
292
PPG0
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
17
18
2
/HCLK
2
/HCLK
PPG1
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
9
2
/HCLK to
25
2
/HCLK
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
2
/HCLK to
26
2
/HCLK
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