at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 44

• Manufacturer Part Number: at91rm3400
• Description: Atmel Advanced At91 Arm Microcontroller
• Manufacturer: ATMEL Corporation

Flow Diagram
The Boot Program implements the algorithm presented in Figure 9.
Figure 9. Boot Program Algorithm Flow Diagram
44
AT91RM3400
Applicable only to parallel boot interfaces
*DFU = Device Firmware Upgrade
EEPROM Boot
SPI DataFlash
Parallel
Device
Setup
Boot
Boot
TWI
Timeout 40 ms
Timeout 10 ms
OR
Yes
Yes
Yes
Download from
Download from
Download from
USB Download
DFU* protocol
DBGU Serial
8-bit Device
DataFlash
Download
EEPROM
Run
Run
Run
Run
Run
Bootloader
Boot Uploader
1790A–ATARM–11/03