SH7618 Datasheet, PDF (238/646 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series

Section 8 Clock Pulse Generator (CPG)
When Using a PLL Oscillator Circuit: Keep the wiring from the PLL V_CC and PLL V_SS
connection pattern to the power supply pins short, and make the pattern width large, to minimize
the inductance component.
The analog power supply system of the PLL is sensitive to a noise. Therefore, the system
malfunction may occur by the intervention with other power supply. Do not supply the analog
power supply with the same resource as the digital power supply of V_CC and V_CCQ.
Rev. 6.00 Jun. 12, 2007 Page 206 of 610
REJ09B0131-0600