AT91FR40162SB_14 Datasheet, PDF (205/214 Pages) ATMEL Corporation – 1024K Words 16-bit Flash Memory (2M bytes)

AT91FR40162SB
24. AT91FR40162SB Errata
24.1 Marking
All devices are marked with the Atmel logo and the ordering code.
Additional marking has the following format:
YYWW V
XXXXXXXXX
ARM
where
• “YY”: manufactory year
• “WW”: manufactory week
• “V”: revision
“XXXXXXXXX”: lot number
24.2 Flash
24.2.1
Flash: Erroneous Read of the first instruction out of the integrated Flash memory
At power-up when fetching the first instruction out of the integrated Flash memory, the ARM pro-
cessor may read the first two 16-bit words at 0xFFFF instead of the prgrammed value,
preventing the device to start-up correctly.
Problem Fix/Workaround
Software workaround is to add 0xFFFFFFFF, 32-bit instruction at the beginning of the program
code. When reading instruction 0xFFFFFFFF, equivalent to a NOP instruction, the ARM7TDMI
processor will execute the next instruction corresponding to the true first instruction of the pro-
gram you want the processor to run.
6410B–ATARM–12-Jan-10
205