PD780701Y_15 Datasheet, PDF (47/66 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD780701Y, 780702Y
System Clock Oscillator Characteristics (TA = −40 to +85°C, VDD = 3.5 to 5.5 V)
Resonator
Crystal
resonator
Recommended Circuit
IC X2
R1
C2
X1
C1
Parameter
Oscillation frequency
(fX)^{Note 1}
Oscillation stabilization
time^{Note 3}
Conditions
MIN.
TYP. MAX.
6.29^{Note 2}
Unit
MHz
30
ms
Notes 1. Indicates only oscillator characteristics.
2. 6.29 = 6.291456 (MHz)
3. Time required to stabilize oscillation after reset or STOP mode release.
Caution When using the system clock oscillator, wire as follows in the area enclosed by the broken lines in
the above figure 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 VSS1.
• Do not ground the capacitor to a ground pattern through which a high current flows.
• Do not fetch signals from the oscillator.
Preliminary Product Information U13920EJ1V0PM00
45