PD78F0701Y_15 Datasheet, PDF (30/54 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD78F0701Y
CHARACTERISTICS OF THE SYSTEM CLOCK OSCILLATION CIRCUIT (TA = -40°C to +85°C, VDD = 3.5 to 5.5 V)
Resonator
Crystal
Recommended circuit
VPP X2
R1
C2
X1
C1
Parameter
Oscillation frequency
Note 1
(fX)
Oscillation settling
Note 3
time
Conditions
MIN.
TYP.
Note 2
6.29
MAX.
Unit
MHz
30
ms
Notes 1. Only the characteristics of the oscillation circuit are indicated.
2. 6.29 = 6.291456 (MHz)
3. Time required for oscillation to settle once a reset sequence ends or STOP mode is deselected.
Caution When using the system clock oscillation circuit, observe the following conditions for the wiring
of that section enclosed in dotted lines in the above diagrams, so as to avoid the influence of the
wiring capacitance.
• Keep the wiring as short as possible.
• Do not allow signal wires to cross one another.
• Keep the wiring away from wires that carry a high, non-stable current.
• Keep the grounding point of the capacitors at the same level as VSS1.
• Do not connect the grounding point to a grounding wire that carries a high current.
• Do not extract a signal from the oscillation circuit.
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Preliminary Product Information U13563EJ2V0PM00