Datasheet

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GPNVM Bit Function

8:7 TCM configuration

00: 0 Kbytes DTCM + 0 Kbytes ITCM (default)

01: 32 Kbytes DTCM + 32 Kbytes ITCM

10: 64 Kbytes DTCM + 64 Kbytes ITCM

1: 128 Kbytes DTCM + 128 Kbytes ITCM

Note: After programming, reboot must be done.

11.1.6 Boot Strategies

The system always boots at address 0x0. To ensure maximum boot possibilities, the memory layout can be changed

using GPNVM bits.

A 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.

Setting the bit GPNVM1 selects boot from the Flash. Clearing it selects boot from the ROM. Asserting ERASE resets

the bit GPNVM1 and thus selects boot from ROM.

11.2 External Memories

The SAM E70/S70/V70/V71 features one External Bus Interface to provide an interface to a wide range of external

memories and to any parallel peripheral.

SAM E70/S70/V70/V71 Family

Memories

echnology Inc.

Datasheet

DS60001527D-page 60