at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 82

• Manufacturer Part Number: at91sam9260-cj
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

6221G–ATARM–31-Jan-08
The DataFlash has a Status Register that determines all the parameters required to access the
device. The DataFlash boot is configured to be compatible with the future design of the
DataFlash.
Figure 13-7. Serial DataFlash Download
Read the DataFlash into the internal SRAM.
Restore the reset value for the peripherals.
Set the PC to 0 and perform the REMAP
Read the first 7 instructions (28 bytes).
to jump to the downloaded application
(code size to read in vector 6)
Decode the sixth ARM vector
(except vector 6) are LDR
Send status command
or Branch instruction
Is status OK ?
7 vectors
Start
End
Yes
Yes
No
No
Jump to next boot
solution
AT91SAM9260
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