RA2E2 datasheet(24/98 Pages) RENESAS

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Table 2.19

Clock timing (2 of 2)

Parameter

Symbol

Min

Typ

Max

Unit

Test conditions

HOCO clock oscillation frequency*3

fHOCO24

23.76

24.24

MHz

Ta = -40 to 125°C

1.6 ≤ VCC ≤ 5.5

fHOCO32

31.68

32.32

Ta = -40 to 125°C

1.6 ≤ VCC ≤ 5.5

fHOCO48

47.52

48.48

Ta = -40 to 125°C

1.6 ≤ VCC ≤ 5.5

fHOCO64

63.36

64.64

Ta = -40 to 125°C

1.6 ≤ VCC ≤ 5.5

HOCO clock oscillation stabilization time*1 *2

tHOCO24

tHOCO32

tHOCO48

tHOCO64

—

6.7

7.7

µs

Figure 2.4

Note 1. This is a characteristic when the HOCOCR.HCSTP bit is set to 0 (oscillation) in the MOCO stop state. When the HOCOCR.HCSTP

bit is set to 0 (oscillation) during MOCO oscillation, this specification is shortened by 1 µs.

Note 2. Check OSCSF.HOCOSF to confirm whether stabilization time has elapsed.

Note 3. Accuracy at production test.

LOCO clock oscillator output

LOCOCR.LCSTP

tLOCO

Figure 2.3

LOCO clock oscillation start timing

HOCO clock

HOCOCR.HCSTP

tHOCOx*1

Note:

x = 24, 32, 48, 64

Figure 2.4

HOCO clock oscillation start timing (started by setting the HOCOCR.HCSTP bit)

2.3.3

Reset Timing

Table 2.20

Reset timing (1 of 2)

Parameter

Symbol

Min

Typ

Max

Unit

Test

conditions

RES pulse width

At power-on

tRESWP

—

Figure 2.5

Not at power-on

tRESW

—

µs

Figure 2.6

Wait time after RES cancellation (at

power-on)

LVD0 enabled*1

tRESWT

—

0.9

—

Figure 2.5

LVD0 disabled*2

—

0.2

—

RA2E2 Datasheet

2. Electrical Characteristics

R01DS0387EJ0110 Rev.1.10

Mar 31, 2022

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