at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 79

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

13.7
13.7.1
13.8
13.9
6384B–ATARM–15-Dec-08
NAND Flash Boot
SDCard Boot
EEPROM Boot
Supported NAND Flash Devices
The NAND Flash Boot program searches for a valid application in the NAND Flash memory.
If a valid application is found, this application is loaded into internal SRAM and executed by
branching at address 0x0000_0000 after remap. See
more information on Valid Image Detection.
Any 8- or 16-bit NAND Flash Device.
The SDCard Boot program searches for a valid application in the SD Card memory.
(Boot ROM does not support high capacity SDCards.)
It looks for a boot.bin file in the root directory of a FAT12/16/32 formatted SD Card. If a valid file
is found, this application is loaded into internal SRAM and executed by branching at address
0x0000_0000 after remap. This application may be the application code or a second-level
bootloader.
The EEPROM Boot program searches for a valid application in an EEPROM connected to the
TWI address: 0x0050_0000.
If a valid application is found, this application is loaded into internal SRAM and executed by
branching at address 0x0000_0000 after remap. See
more information on Valid Image Detection.
AT91SAM9G20 Preliminary
“Valid Image Detection” on page 75
“Valid Image Detection” on page 75
for
for
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