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Second-Stage Bootloader for Bare-Metal Applications on Microchip MPUs

ATSAMA5D21 ATSAMA5D23 ATSAMA5D24 ATSAMA5D26 ATSAMA5D27 ATSAMA5D27C-D1G ATSAMA5D27C-D5M ATSAMA5D27C-LD1G ATSAMA5D27C-LD2G ATSAMA5D27-SOM1 ATSAMA5D27-WLSOM1 ATSAMA5D28 ATSAMA5D28C-D1G ATSAMA5D28C-LD1G ATSAMA5D28C-LD2G ATSAMA5D29 ATSAMA5D31 ATSAMA5D33 ATSAMA5D34 ATSAMA5D35 ATSAMA5D36 ATSAMA5D41 ATSAMA5D42 ATSAMA5D43 ATSAMA5D44 SAM9X60 SAM9X60D1G SAM9X60D1G-I/LZB SAM9X60D5M SAM9X60D6K SAM9X70 SAM9X72 SAM9X75 SAM9X75D1G SAM9X75D1GN2 SAM9X75D2G SAM9X75D2GN4 SAM9X75D5M SAM9X75D5MN0 SAMA7D65 SAMA7D65D1G SAMA7D65D2G SAMA7G54 SAMA7G54D1G SAMA7G54D2G SAMA7G54D4G

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5 Revision History

Introduction
References
1 ROM Code Boot Strategies (First-Stage Bootloader)
2 at91bootstrap as a Second-Stage Bootloader
3 Appendix A: OTP Emulation Mode
4 Appendix B: Configure at91bootstrap for Debug Use with MPLAB X IDE
5 Revision History
- 5.1 Rev. A - 08/2025
Microchip Information

5 Revision History

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