R5F5671CDDFM datasheet(96/179 Pages) RENESAS

96 / 179 page

R01DS0373EJ0120 Rev.1.20

Page 96 of 179

Sep 30, 2024

RX671 Group

2. Electrical Characteristics

Figure 2.10

PLL Clock Oscillation Start Timing

Note 1. When using a sub-clock, ask the manufacturer of the oscillator to evaluate its oscillation. Refer to the results of evaluation

provided by the manufacturer for the oscillation stabilization time.

Note 2. The number of cycles selected by the value of the SOSCWTCR.SSTS[7:0] bits determines the sub-clock oscillation stabilization

waiting time in accord with the formula below.

tSUBOSCWT = [(SSTS[7:0] bits × 16384) + 10] / fLOCO

Figure 2.11

Sub-Clock Oscillation Start Timing

Table 2.20

PLL Clock Timing

Conditions: VCC = AVCC0 = AVCC1 = VCC_USB = VBATT = 2.7 to 3.6 V, 2.7 V ≤ VREFH0 ≤ AVCC0,

VSS = AVSS0 = AVSS1 = VREFL0 = VSS_USB = 0 V,

Ta = Topr

Item

Symbol

Min.

Typ.

Max.

Unit

Test

Conditions

PLL clock oscillation frequency

fPLL

120

—

240

MHz

PLL clock oscillation stabilization waiting time

tPLLWT

—

259

320

µs

Figure 2.10

Table 2.21

Sub-Clock Timing

Conditions: VCC = AVCC0 = AVCC1 = VCC_USB = 2.7 to 3.6 V, 2.7 V ≤ VREFH0 ≤ AVCC0,

VSS = AVSS0 = AVSS1 = VREFL0 = VSS_USB = 0 V,

When a low CL crystal resonator is in use: VBATT = 2.0 to 3.6 V,

When a standard CL crystal resonator is in use: VBATT = 1.62 to 3.6 V, Ta = Topr

Item

Symbol

Min.

Typ.

Max.

Unit

Test

Conditions

Sub-clock oscillation frequency

fSUB

—

32.768

—

kHz

Sub-clock oscillation stabilization time

tSUBOSC

——

Figure 2.11

Sub-clock oscillation stabilization waiting time

tSUBOSCWT

——

PLLCR2.PLLEN

OSCOVFSR.PLOVF

PLL clock

tPLLWT

PLL circuit output

Sub-clock oscillator output

SOSCCR.SOSTP

tSUBOSC

Sub-clock

OSCOVFSR.SOOVF

tSUBOSCWT

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