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CHAPTER 11 TIMEBASE TIMER
■Clock Supply
The timebase timer supplies an operation clock to the resources such as an oscillation stabilization wait
time timer, PPG timer, and watchdog timer. Table 11.1-2 shows the clock cycles supplied from the
timebase timer to each resource.
Table 11.1-2 Clock Cycles Supplied from Timebase Timer
Where to supply clock Clock cycle
Oscillation stabilization wait time* 210/HCLK (approx. 256 µs)
213/HCLK (approx. 2.0 ms)
215/HCLK (approx. 8.2 ms)
217/HCLK (approx. 32.8 ms)
Watchdog timer 212/HCLK (approx. 1.0 ms)
214/HCLK (approx. 4.1 ms)
216/HCLK (approx. 16.4 ms)
219/HCLK (approx. 131.1 ms)
PPG timer 29/HCLK (approx. 128 µs)
HCLK: Oscillation clock
The parenthesized values are provided at 4-MHz oscillation clock.
*:As the oscillation cycle is unstable immediately after oscillation starts, standard oscillation
stabilization wait time values are given as a guide.