HD6432633 Datasheet, PDF (1030/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

External circuitry such as that shown below is recommended around the PLL.
PLLCAP
R1: 3 kΩ
C1: 470 pF
PLLVSS
PVCC
VSS
CB: 0.1 µF*
(Values are recommended values.)
Note: * CB and CPB are laminated ceramic capacitors.
Figure 23B-5 Points for Attention when Using PLL Oscillation Circuit
Place oscillation stabilization capacitor C1 and resistor R1 close to the PLLCAP pin, and ensure
that no other signal lines cross this line. Supply the C1 ground from PLLVSS.
Separate PLLVSS from the other VCC and VSS lines at the board power supply source, and be
sure to insert bypass capacitors CPB and CB close to the pins.
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