Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet
Product codes
ATSAM4E-XPRO
29
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
The Flash of SAM4E is composed of 1024 Kbytes in a single bank.
8.1.4
Boot Strategies
The system always boots at address 0x0. To ensure maximum boot possibilities, the memory layout can be
changed via GPNVM.
changed via GPNVM.
A general purpose NVM (GPNVM) bit is used to boot either on the ROM (default) or from the Flash.
The GPNVM bit can be cleared or set respectively through the commands “Clear General-purpose NVM Bit” and
“Set General-purpose NVM Bit” of the EEFC User Interface.
“Set General-purpose NVM Bit” of the EEFC User Interface.
Setting GPNVM Bit 1 selects the boot from the Flash, clearing it selects the boot from the ROM. Asserting ERASE
clears the GPNVM Bit 1 and thus selects the boot from the ROM by default.
clears the GPNVM Bit 1 and thus selects the boot from the ROM by default.
Table 8-2.
General-purpose Non-volatile Memory Bits
GPNVMBit[#]
Function
0
Security bit
1
Boot mode selection