3.3 Escape Pattern

The figures below illustrate various escape pattern designs.

Figure 3-2. SAM9X7 Series Top Layer Example - Signal
Figure 3-3. SAM9X7 Series Layer 2 Example - Ground
Figure 3-4. SAM9X7 Series Layer 3 Example - Signal
Figure 3-5. SAM9X7 Series Layer 4 Example - Power
Figure 3-6. SAM9X7 Series Layer 5 Example - Ground
Figure 3-7. SAM9X7 Series Bottom Layer Example - Signal

The decoupling capacitors should be placed on the bottom, as close as possible to the vias connecting the power pins of the MPU. An example of such placement can be seen in the following figure.

Figure 3-8. SAM9X7 Series Decoupling Capacitors Placement Example