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Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet

Product codes
AT91SAM9N12-EK
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SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
51.2
SAM9CN12 Errata: Revision A
51.2.1 BootROM
51.2.1.1 Boot from SPI Serial Flash Devices (xx25xxx) Is not Working
The boot from SPI serial Flash series is not working. SAM9CN12 supports only booting from AT45 DataFlash series.
Problem Fix/Workaround
AT45 DataFlash series must be used. Please use one of the following Data/Serial Flashes: AT45DB321, AT45DB642.
51.2.2  16 MHz Main Crystal
51.2.2.1 16 MHz Main Crystal Detection
The 16 MHz crystal may not be detected properly in harsh conditions (high temperature, low voltage).
The code uses only +-3% tolerance drift for the internal 12 MHz RC, used for main crystal detection, instead of +-5%.
This leads to a bad detection of the main crystal, if 16 MHz value is used, and to a lock of the boot.
This issue does not apply if the main crystal is 12 MHz.
Problem Fix/Workaround
Use the 12 MHz value for the main crystal.
51.3
SAM9CN12 Errata: Revision B
51.3.1 Boot 
ROM
51.3.1.1 Boot from SPI Data/Serial Flash Devices do not work with All Memories
The boot from SPI Data/Serial Flash series does not work with all memories.
Problem Fix/Workaround
Use one of the following Data/Serial Flashes: AT45DB321, AT45DB642, AT25DF161, AT25DF512B, AT25DF021,
AT25DF041A, AT25DF321, AT25DF641A, M25P05, M25P10, M25P20, M25P80, M25P16, M25P32, M25P64.