CHAPTER 19 ELECTRICAL SPECIFICATIONS (TARGET)
Preliminary User’s Manual U15905EJ1V0UD
490
Recommended oscillator
(1) Main clock oscillator (T
A
=
−−−−
40 to +85°C)
(a) Connection of ceramic resonator or crystal resonator
X1
X2
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Oscillation frequency
f
X
(f
XX
)
V
DD
=
2.2 to 2.7 V
2
17
MHz
Upon reset release
2
19
/f
X
s
Oscillation stabilization time
Upon STOP mode release
Note
s
Note
The TYP. value differs depending on the setting of the oscillation stabilization time select register (OSTS).
Caution
Ensure that the duty of the oscillation waveform is between 45% and 55%.
Remarks 1.
Connect the oscillator as close as possible to the X1 and X2 pins.
2.
Do not route the wiring near broken lines.
3.
For the resonator selection and oscillator constant, customers are requested to either evaluate the
oscillation themselves or apply to the resonator manufacturer for evaluation.
Summary of Contents for V850ES/SA2 UPD703201
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