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CHAPTER 16 8-/16-BIT PPG TIMER
■Operation Modes of 8-/16-bit PPG Timer
●8-bit PPG output 2-channel independent operation mode
The 8-bit PPG output 2-channel independent operation mode causes the 2-channel modules (PPGC and
PPGD) to operate as each independent 8-bit PPG timer.
Table 16.1-1 shows the interval times in the 8-bit PPG output 2-channel independent operation mode.
●16-bit PPG output operation mode
The 16-bit PPG output operation mode concatenates the 2-channel modules (PPGC and PPGD) to operate
as a 16-bit 1-channel PPG timer.
Table 16.1-2 shows the interval times in this mode.
Table 16.1-1 Interval Times in 8-bit PPG Output 2-channel Independent Operation Mode
Count Clock Cycle PPGC, PPGD
Interval Time Output Pulse Time
1/φ(41.7 ns) 1/φ to 28/φ2/φ to 29/φ
2/φ(83.3 ns) 2/φ to 29/φ22/φ to 210/φ
22/φ(167 ns) 22/φ to 210/φ23/φ to 211/φ
23/φ(333 ns) 23/φ to 211/φ24/φ to 212/φ
24/φ(667 ns) 24/φ to 212/φ25/φ to 213/φ
29/HCLK(128 µs) 29/HCLK to 217/HCLK 210/HCLK to 218/HCLK
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.
Table 16.1-2 Interval Times in 16-bit PPG Output Operation Mode
Count clock cycle Interval time Output pulse time
1/φ(41.7 ns) 1/φ to 216/φ2/φ to 217/φ
2/φ(83.3 ns) 2/φ to 217/φ22/φ to 218/φ
22/φ(167 ns) 22/φ to 218/φ23/φ to 219/φ
23/φ(333 ns) 23/φ to 219/φ24/φ to 220/φ
24/φ(667 ns) 24/φ to 220/φ25/φ to 221/φ
29/HCLK(128 µs) 29/HCLK to 225/HCLK 210/HCLK to 226/HCLK
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.