Internal memories
SPEAr1340 combines two built-in memory:
- 32 KB Boot ROM (BootROM)
- Static RAM area (SRAM)
BootROM
BootROM refers to the on-chip 32 KB ROM, as well as firmware in a tube pre-stored in a memory. Supported boot devices:
- Serial NOR Flash
- Parallel NOR Flash
- NAND Flash
- USB OTG
- UART
- SD / MMC
BootROM firmware selects the boot device after reset by reading the status strap [3: 0] Contact.
Static RAM (SRAM)
Some of these memory areas used during the boot phase by flash BootROM. After downloading all areas of SRAM fully available for general-purpose applications.
Key Features:
- 32 KB of RAM (SYSRAM0, one port). When all of the islands off the power, SYSRAM0 losing data content.
- 4K always RAM (SYSRAM1, one port). When all of the islands off the power, SYSRAM1 retains its data content.
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