7.1 PCB Stack-Up

A minimum of ten layers is required to ensure proper connectivity for signals and power. The following figure shows an example of a 10-layer stack-up.

Each layer can be assigned as follows:

Layer 1 (Top) – Signal
Layer 2 (Inner) – Ground
Layer 3 (Inner) – Signal
Layer 4 (Inner) – Power
Layer 5 (Inner) – Ground
Layer 6 (Inner) – Signal
Layer 7 (Inner) – Power
Layer 8 (Inner) – Signal
Layer 9 (Inner) – Ground
Layer 10 (Bottom) – Signal

Figure 7-1. SAMA5D31 10-Layer PCB Stack-Up Example

DS00005871C

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