Microchip Technology SAM Series

12. ADC.......................................................................................................................................................52
12.1. Typical SAM SAR ADC Total Unadjusted Error Sources (TUE).................................................52
12.2. ADC Noise..................................................................................................................................52
12.3. VREF Accuracy..........................................................................................................................54
12.4. Circuit IR Drop Errors................................................................................................................. 54
13. I
2
S and Push Button Protection Illustration
........................................................................................... 57
13.1. Key I
2
S and Push Button Protection Design Points................................................................... 57
14. I
2
C......................................................................................................................................................... 58
14.1. Key I
2
C Protection Design Points...............................................................................................59
15. Inlet Power Protection Illustration..........................................................................................................60
16. Ethernet.................................................................................................................................................61
16.1. Special Ethernet 10/100 Base-T Design Guidelines.................................................................. 61
17. Comprehensive PCB Layout Guidelines and Recommendations.........................................................64
17.1. PCB Bypassing.......................................................................................................................... 68
17.2. PCB Layer Strategy....................................................................................................................68
17.3. PCB Signal Integrity Concerns...................................................................................................70
17.4. PCB Trace Considerations......................................................................................................... 71
18. Revision History.................................................................................................................................... 72
The Microchip Website.................................................................................................................................73
Product Change Notification Service............................................................................................................73
Customer Support........................................................................................................................................ 73
Microchip Devices Code Protection Feature................................................................................................ 73
Legal Notice................................................................................................................................................. 74
Trademarks.................................................................................................................................................. 74
Quality Management System....................................................................................................................... 75
Worldwide Sales and Service.......................................................................................................................76
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echnology Inc.
and its subsidiaries
Manual
DS70005439B-page 3