F24 datasheet(99/210 Pages) RENESAS

99 / 210 page

RL78/F23, F24

4. ELECTRICAL SPECIFICATIONS (GRADE 4)

R01DS0446EJ0120 Rev.1.20

Page 99 of 207

Dec 31, 2025

4.2.3 Subsystem Clock Oscillator Characteristics

(TA = -40 to +125

°C, 2.7 V ≤ EVDD0 = EVDD1 = VDD ≤ 5.5 V, VSS = EVSS0 = EVSS1 = 0 V)

Resonator

Recommended Circuit

Item

Conditions

MIN.

TYP.

MAX. Unit

Crystal resonator

XT1 clock oscillation frequency (fXT)

2.7 V

≤ VDD ≤ 5.5 V

29.0

32.768

35.0

kHz

Cautions 1. When using the XT1 oscillator, wire as follows in the area enclosed by the broken lines in the above

figures to avoid an adverse effect from wiring capacitance.

 Keep the wiring length as short as possible.

 Do not cross the wiring with the other signal lines.

 Do not route the wiring near a signal line through which a high fluctuating current flows.

 Always make the ground point of the oscillator capacitor the same potential as VSS.

 Do not ground the capacitor to a ground pattern through which a high current flows.

 Do not fetch signals from the oscillator.

2. The XT1 oscillator is designed as a low-amplitude circuit for reducing power consumption and thus

required to be adequately evaluated on the system. Customers are requested to consult the

resonator manufacturer to select an appropriate resonator and to determine the proper oscillation

constant.

XT2

XT1

VSS

F24 Datasheet(PDF) 99 Page - Renesas Technology Corp