at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 49

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

Serial DataFlash
Download
1790A–ATARM–11/03
The Boot Program supports all Atmel DataFlash devices. Table 12 summarizes the parame-
ters 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.
Thus, to be compatible with the future design of the DataFlash, parameters are coded in the
ARM vector 6.
Figure 14. 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 8 instructions (32 bytes).
to jump to the downloaded application
(code size to read in vector 6)
Decode the sixth ARM vector
(except vector 6) are LDR
or Branch instruction ?
Send status command
Is status ok ?
8 vectors
Start
End
Yes
Yes
No
No
EEPROM Download
Serial Two-Wire
AT91RM3400
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