RA6M3 datasheet(39/116 Pages) RENESAS

39 / 116 page

R01DS0358EJ0110 Rev.1.10

Page 39 of 116

Dec 25, 2020

RA6M3 Group

2. Electrical Characteristics

Note 1.

When setting up the main clock oscillator, ask the oscillator manufacturer for an oscillation evaluation and use the results as the

recommended oscillation stabilization time. Set the MOSCWTCR register to a value equal to or greater than the recommended

value.

After changing the setting in the MOSCCR.MOSTP bit to start main clock operation, read the OSCSF.MOSCSF flag to confirm

that it is 1, and then start using the main clock oscillator.

Note 2.

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

operation.

Note 1.

When setting up the sub-clock oscillator, ask the oscillator manufacturer for an oscillation evaluation and use the results as the

recommended oscillation stabilization time.

After changing the setting in the SOSCCR.SOSTP bit to start sub-clock operation, only start using the sub-clock oscillator after

the sub-clock oscillation stabilization time elapses with an adequate margin. Two times the value shown is recommended.

EXTAL external clock input cycle time

tEXcyc

41.66

Figure 2.8

EXTAL external clock input high pulse width

tEXH

15.83

EXTAL external clock input low pulse width

tEXL

15.83

EXTAL external clock rise time

tEXr

5.0

EXTAL external clock fall time

tEXf

5.0

Main clock oscillator frequency

fMAIN

MHz

Main clock oscillation stabilization wait time

(crystal) *1

tMAINOSCWT

-*1

Figure 2.9

LOCO clock oscillation frequency

fLOCO

27.8528

32.768

37.6832

kHz

LOCO clock oscillation stabilization wait time

tLOCOWT

60.4

Figure 2.10

ILOCO clock oscillation frequency

fILOCO

12.75

17.25

kHz

MOCO clock oscillation frequency

FMOCO

6.8

9.2

MHz

MOCO clock oscillation stabilization wait time

tMOCOWT

15.0

HOCO clock oscillator

oscillation frequency

Without FLL

fHOCO16

15.78

16.22

MHz

-20 ≤ Ta ≤ 105°C

fHOCO18

17.75

18.25

fHOCO20

19.72

20.28

fHOCO16

15.71

16.29

-40 ≤ Ta ≤ -20°C

fHOCO18

17.68

18.32

fHOCO20

19.64

20.36

With FLL

fHOCO16

15.955

16.045

-40 ≤ Ta ≤ 105°C

Sub-clock

frequency accuracy

is ±50 ppm.

fHOCO18

17.949

18.051

fHOCO20

19.944

20.056

HOCO clock oscillation stabilization wait time*2

tHOCOWT

64.7

FLL stabilization wait time

tFLLWT

1.8

PLL clock frequency

fPLL

120

240

MHz

PLL clock oscillation stabilization wait time

tPLLWT

174.9

Figure 2.11

Table 2.14

Clock timing for the sub-clock oscillator

Parameter

Symbol

Min

Typ

Max

Unit

Test conditions

Sub-clock frequency

fSUB

32.768

kHz

Sub-clock oscillation stabilization wait time

tSUBOSCWT

Figure 2.12

Table 2.13

Clock timing except for sub-clock oscillator (2 of 2)

Parameter

Symbol

Min

Typ

Max

Unit

Test conditions

RA6M3 Datasheet(PDF) 39 Page - Renesas Technology Corp

RA6M3 Datasheet(HTML) 39 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL