R5F110ME datasheet(24/153 Pages) RENESAS

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RL78/L1C

2. ELECTRICAL SPECIFICATIONS (A: TA = -40 to +85 °C)

R01DS0192EJ0200 Rev. 2.00

Page 24 of 149

Feb 21, 2014

2.2

Oscillator Characteristics

2.2.1

X1 and XT1 oscillator characteristics

Note

Indicates only permissible oscillator frequency ranges. Refer to AC Characteristics for instruction execution time.

Request evaluation by the manufacturer of the oscillator circuit mounted on a board to check the oscillator

characteristics.

Caution

Since the CPU is started by the high-speed on-chip oscillator clock after a reset release, check the X1 clock

oscillation stabilization time using the oscillation stabilization time counter status register (OSTC) by the user.

Determine the oscillation stabilization time of the OSTC register and the oscillation stabilization time select

Remark

When using the X1 and XT1 oscillator, refer to 5.4 System Clock Oscillator in the RL78/L1C User’s Manual.

(TA = -40 to +85 °C, 1.6 V

 VDD  3.6 V, VSS = 0 V)

Parameter

Resonator

Conditions

MIN.

TYP.

MAX.

Unit

X1 clock oscillation frequency (fX)

Note

Ceramic resonator/crystal resonator

2.7 V



VDD 3.6 V

1.0

20.0

MHz

2.4 V



VDD < 2.7 V

1.0

16.0

1.8 V



VDD < 2.4 V

1.0

8.0

1.6 V



VDD < 1.8 V

1.0

4.0

XT1 clock oscillation frequency

(fXT) Note

Crystal resonator

32.768

kHz

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