Datasheet

SAM9263 [DATASHEET]
Atmel-6249N-ATARM-SAM9263-Datasheet_14-Mar-16
100
12.4.2.1 Example
An example of valid vectors follows:
Address Value Code
00 ea000006 B 0x20
04 eafffffe B 0x04
08 ea00002f B _main
0c eafffffe B 0x0c
10 eafffffe B 0x10
14 00001000 Code size = 4096 bytes (less than or equal to 72 Kbytes)
18 eafffffe B 0x18
The size of the image to load into SRAM is contained in the location of the sixth ARM vector. Thus the user must
replace this vector by the correct vector for his application.
12.4.3 DataFlash Boot Sequence
The DataFlash boot program performs device initialization followed by the download procedure.
The DataFlash boot program supports the DataFlash devices listed in Table 12-2. The table summarizes the
parameters to include in the ARM vector 6 for all devices.
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.
Table 12-2. DataFlash Devices
Device Density Page Size (bytes) Number of Pages
AT45DB011 1 Mbit 264 512
AT45DB021 2 Mbits 264 1024
AT45DB041 4 Mbits 264 2048
AT45DB081 8 Mbits 264 4096
AT45DB161 16 Mbits 528 4096
AT45DB321 32 Mbits 528 8192
AT45DB642 64 Mbits 1056 8192