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■ Clock Supply Function
The clock supply function supplies clocks to the oscillation stabilization time timer and to some peripheral
functions.
Table 10.1-2 lists the cycle times of clocks supplied from the time-base timer to each peripheral.
Table 10.1-2 Clock Cycle Time supplied from the Time-base Timer
Clock destination
Oscillation
stabilization time
Watchdog timer
HCLK: Oscillation clock
Values in parentheses occurs during operation of the 4 MHz oscillation clock.
Reference:
The oscillation stabilization time is the yardstick because the oscillation cycle time is unstable as
soon as oscillation starts.
Clock cycle time
13
2
/ HCLK (Approx. 2.0 ms)
15
2
/ HCLK (Approx. 8.2 ms)
18
2
/ HCLK (Approx. 65.4 ms)
12
2
/ HCLK (Approx. 1.0 ms)
14
2
/ HCLK (Approx. 4.1 ms)
16
2
/ HCLK (Approx. 16.4 ms)
19
2
/ HCLK (Approx. 131.1 ms)
CHAPTER 10 TIME-BASE TIMER
Remarks
Oscillation stabilization time for ceramic vibrator
Oscillation stabilization time for crystal vibrator
Count-up clock for watchdog timer
207
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