RX671 datasheet(97/179 Pages) RENESAS

97 / 179 page

R01DS0373EJ0120 Rev.1.20

Page 97 of 179

Sep 30, 2024

RX671 Group

2. Electrical Characteristics

Note 1. If the main clock oscillator is selected by the CLKOUT output source select bit (CKOCR.CKOSEL[2:0]) and the external clock

input is selected by the main clock oscillator switching bit (MOFCR.MOSEL), the pulse width depends on the input clock wave

form.

Figure 2.12

CLKOUT Pin Output Timing

Table 2.22

CLKOUT Pin Output 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,

High-drive output is selected by the drive capacity control register

Item

Symbol

Min.

Typ.

Max.

Unit

Test

Conditions

CLKOUT pin output cycle time

tCcyc

—

Figure 2.12

tCcyc = 25 ns

CLKOUT pin output high pulse width*1

tCH

5—

—

CLKOUT pin output low pulse width*1

tCL

5—

—

CLKOUT pin output rising time

tCr

——

CLKOUT pin output falling time

tCf

——

tCf

tCH

tCcyc

tCr

tCL

CLKOUT pin output

Test Conditions VOH = 0.7 × VCC, VOL = 0.3 × VCC, C = 30pF

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