SAM3SD8B Atmel Corporation, SAM3SD8B Datasheet - Page 305

• Manufacturer Part Number: SAM3SD8B
• Manufacturer: Atmel Corporation

18.4.3.1
11090A–ATARM–10-Feb-12
11090A–ATARM–10-Feb-12
Getting Embedded Flash Descriptor
Figure 18-6. Command State Chart
This command allows the system to learn about the Flash organization. The system can take full
advantage of this information. For instance, a device could be replaced by one with more Flash
capacity, and so the software is able to adapt itself to the new configuration.
To get the embedded Flash descriptor, the application writes the GETD command in the
EEFC_FCR register. The first word of the descriptor can be read by the software application in
the EEFC_FRR register as soon as the FRDY flag in the EEFC_FSR register rises. The next
reads of the EEFC_FRR register provide the following word of the descriptor. If extra read oper-
ations to the EEFC_FRR register are done after the last word of the descriptor has been
returned, then the EEFC_FRR register value is 0 until the next valid command.
Write FCMD and PAGENB in Flash Command Register
Check if FLOCKE flag Set
Check if FCMDE flag Set
Check if FRDY flag Set
Read Status: MC_FSR
Check if FRDY flag Set
Read Status: MC_FSR
Command Successfull
Yes
Yes
No
No
No
No
Yes
Yes
Locking region violation
Bad keyword violation
SAM3S8/SD8
SAM3S8/SD8
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