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Table 2.26

Clock timing (2 of 2)

Parameter

Symbol

Min

Typ

Max

Unit

Test conditions

MOCO clock oscillation frequency

fMOCO

6.8

9.2

MHz

—

MOCO clock oscillation stabilization time

tMOCO

—

µs

—

HOCO clock oscillation frequency

fHOCO24

23.76

24.24

MHz

—

fHOCO32

31.68

32.32

—

fHOCO40

39.6

40.4

—

fHOCO48

47.52

48.48

—

fHOCO64

63.36

64.64

—

fHOCO80

79.2

80.8

—

HOCO clock oscillation frequency*3

fHOCOWT

—

1.9

—

µs

Figure 2.8

PLL input frequency

fPLLIN

—

12.5

MHz

—

PLL clock frequency

fPLL

—

MHz

—

PLL clock oscillation stabilization time

fPLL

—

µs

Figure 2.9

Sub-clock oscillator oscillation frequency

fSUB

—

32.77

—

kHz

—

Sub-clock oscillation stabilization time*2

tSUBOSC

—

0.5

—

Figure 2.10

Note 1. Time until the clock can be used after the Main Clock Oscillator stop bit (MOSCCR.MOSTP) is set to 0 (operating) when the

external clock is stable.

Note 2. After changing the setting of the SOSCCR.SOSTP bit to start sub-clock oscillator operation, only start using the sub-clock oscillator

after the sub-clock oscillation stabilization wait time elapsed. Use the oscillator wait time value recommended by the oscillator

manufacturer.

Note 3. This is the time from release from reset state until the HOCO oscillation frequency (fHOCO) reaches the range for guaranteed

operation.

tXH

tXcyc

EXTAL external clock input

VCC × 0.5

tXL

tXr

tXf

Figure 2.6

EXTAL external clock input timing

LOCO clock oscillator output

LOCOCR.LCSTP

tLOCO

Figure 2.7

LOCO clock oscillation start timing

RA4L1 Datasheet

2. Electrical Characteristics

R01DS0447EJ0131 Rev.1.31

May 26, 2026

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