at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 99
at91sam9263
Manufacturer Part Number
at91sam9263
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9263.pdf
(1065 pages)
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13.4.2
Figure 13-5. Structure of the ARM Vector 6
13.4.2.1
13.4.3
6249D–ATARM–20-Dec-07
Structure of ARM Vector 6
DataFlash Boot Sequence
Example
31
The ARM exception vector 6 is used to store information needed by the DataFlash boot pro-
gram. This information is described below.
An example of valid vectors follows:
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.
The DataFlash boot program performs device initialization followed by the download procedure.
The DataFlash boot program supports all Atmel DataFlash devices.
parameters to include in the ARM vector 6 for all devices.
Table 13-2.
Device
AT45DB011
AT45DB021
AT45DB041
AT45DB081
AT45DB161
AT45DB321
AT45DB642
00
04
08
0c
10
14
18
– Rn = Rd = PC = 0xF
– I==1
– P==1
– U offset added (U==1) or subtracted (U==0)
– W==1
ea000006
eafffffe
ea00002f
eafffffe
eafffffe
00001234
eafffffe
DataFlash Device
Size of the code to download in bytes
B
B
B
B
B
B
B
0x20
0x04
_main
0x0c
0x10
0x14
0x18
16 Mbits
32 Mbits
64 Mbits
Density
2 Mbits
4 Mbits
8 Mbits
1 Mbit
<- Code size = 4660 bytes
AT91SAM9263 Preliminary
Page Size (bytes)
1056
264
264
264
264
528
528
Table 13-2
Number of Pages
0
summarizes the
1024
2048
4096
4096
8192
8192
512
99
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