| Revision | Date | Section | Description | 
|---|
| A | 03/2021 | Document | 
                            - Updated from
                                    Atmel to Microchip template.
 - Assigned a new
                                    Microchip document number. Previous version is Atmel 42475
                                    version B.
 - ISBN number
                                    added.
 - Updated the terminologies. For more details, see the below
                                    note.
  
                         | 
| Design Considerations | Added Design Considerations chapter. | 
| Appendix A: Regulatory Approval | Updated United States, Europe and Canada sections. | 
Note: 
            Microchip is aware that some terminologies used in the technical documents and
                    existing software codes of this product are outdated and unsuitable. This
                    document may use these new terminologies, which may or may not reflect on the
                    source codes, software GUIs, and the documents referenced within this document.
                    The following table shows the relevant terminology changes made in this
                    document.
            Table 11-1. Terminology Related Changes| Old Terminology | New Terminology | Description | 
|---|
| Master | Host | I/O Pin Assignment is
                                updated with the new terminology. | 
| Slave | Client | I/O Pin Assignment is
                                updated with the new terminology. | 
 
         Table 11-2. Atmel – Revision History| Doc Rev. | Date | Description | 
|---|
| 42475B | 09/2015 | 
                            - Updated
                                    Regulatory Approval details for United States.
 - Added Regulatory
                                    Approval details for Canada.
  
                         | 
| 42475A | 07/2015 | Initial document release. |