Preliminary Product Information U18550EJ2V0PM

12

Resonator

Recommended Circuit

Parameter

Conditions

MIN.

TYP.

MAX.

Unit

Ceramic

resonator

X2

X1

C2

C1

Oscillation

Note 2

2.0

10.0

MHz

Crystal

resonator

X2

X1

C2

C1

Oscillation

Note 2

2.0

10.0

MHz

2.7 V

2.0

10.0

X1 input

Note 2

2.0 V

2.0

5.0

MHz

2.7 V

0.045

0.25

External

clock

X1

X1 input high-

/low-level width

2.0 V

0.09

0.25

Notes 1.

clear (POC) circuit is 2.1 V

±0.1 V.

2.

Indicates only oscillator characteristics. Refer to AC Characteristics for instruction execution time.

Caution

When using the X1 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.

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

• Do not fetch signals from the oscillator.

Remark

For the resonator selection and oscillator constant, users are required to either evaluate the oscillation

themselves or apply to the resonator manufacturer for evaluation.