HD6417751 Datasheet, PDF (301/1105 Pages) Renesas Technology Corp – SuperH RISC engine

When Using a PLL Oscillator Circuit: Separate VDD-CPG and VSS-CPG from the other VDD
and VSS lines at the board power supply source, and insert resistors RCB and RB, and decoupling
capacitors CPB and CB, close to the pins.
VDD-PLL1
VSS-PLL1
SH7751
Series
VDD-PLL2
VSS-PLL2
RCB1
CPB1
RCB2
CPB2
Recommended values
RCB1 = RCB2 = 10 Ω
CPB1 = CPB2 = 10 µF
RB = 10 Ω
CB = 10 µF
1.8 V
VDD-CPG
VSS-CPG
RB
CB
3.3 V
Figure 10.5 Points for Attention when Using PLL Oscillator Circuit
Rev. 3.0, 04/02, page 261 of 1064