Figure 10.5 Points For Attention When Using Pll Oscillator Circuit - Hitachi SH7751 Hardware Manual

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
VDD-PLL2
SH7751
Series
VSS-PLL2
VDD-CPG
VSS-CPG

Figure 10.5 Points for Attention when Using PLL Oscillator Circuit

RCB1
CPB1
RCB2
CPB2
RB
CB
Recommended values
RCB1 = RCB2 = 10 Ω
CPB1 = CPB2 = 10 µF
RB = 10 Ω
CB = 10 µF
Rev. 3.0, 04/02, page 261 of 1064
1.8 V
3.3 V