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Clock supplying function
The clock supplying function is the function supplying the timer for the oscillation stabilization
wait time and the operation clocks to some peripheral functions. Table 9.1-2 lists the cycles of
the clocks supplied by the timebase timer to individual peripheral functions.
Table 9.1-2 Clock cycles supplied by timebase timer
Function to which
clock is supplied
Oscillation stabilization
wait time
Watchdog timer
HCLK: Oscillation clock
The value during operation of the oscillation clock at 4 MHz is shown in ( ).
Because the oscillation cycle immediately after the start of oscillation is unstable, the oscillation stabilization
wait time is merely a guideline.
Clock cycle
13
2
/ HCLK (approximately 2.0 ms)
15
2
/ HCLK (approximately 8.2 ms)
17
2
/ HCLK (approximately 32.8 ms)
12
2
/ HCLK (approximately 1.0 ms)
14
2
/ HCLK (approximately 4.1 ms)
16
2
/ HCLK (approximately 16.4 ms)
19
2
/ HCLK (approximately 131.1 ms)
CHAPTER 9 TIMEBASE TIMER
Remarks
Oscillation stabilization wait time for
ceramic resonator
Oscillation stabilization wait time for crystal
resonator
Up-count clock for watchdog timers
187
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