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How to handle PLLVss, PLLCap and PLLVcc pins when not using PLL?

Latest Updated:03/11/2008

Question:

How should the PLLVss, PLLCap, and PLLVcc pins be handled when not using the PLL functions?

Answer:

The system clock, bus master clock, and internal clock must pass through the PLL circuit in order to oscillate. Thus, even when not using the PLL circuit to multiply clock frequency, configure as shown in "Recommended external circuits for PLL circuit" in the "Clock Oscillator" section of the hardware manual. Note that some products don't have PLLVss and PLLCap pins.
Suitable Products
H8S/2678, 2678R
H8S/2668
H8S/2649
H8S/2648, 2646
H8S/2643
H8S/2630, 2639, 2638, 2636, 2635
H8S/2633
H8S/2628
H8S/2615
H8S/2612
H8S/2378, 2378R
H8S/2368
H8S/2282, 2280
H8S/2215
H8S/2218, 2212
H8SX/1663
H8SX/1657
H8SX/1653
H8SX/1650, H8SX/1651
H8SX/1648A, H8SX/1648L
H8SX/1638, H8SX/1638L