SAM3N0C Atmel Corporation, SAM3N0C Datasheet - Page 55

• Manufacturer Part Number: SAM3N0C
• Manufacturer: Atmel Corporation

10.5
10.5.1
11011A–ATARM–04-Oct-10
Memory model
Memory regions, types and attributes
This section describes the processor memory map, the behavior of memory accesses, and the
bit-banding features. The processor has a fixed memory map that provides up to 4GB of
addressable memory. The memory map is:
The regions for SRAM and peripherals include bit-band regions. Bit-banding provides atomic
operations to bit data, see
The processor reserves regions of the Private peripheral bus (PPB) address range for core
peripheral registers, see
This memory mapping is generic to ARM Cortex-M3 products. To get the specific memory map-
ping of this product, refer to the Memories section of the datasheet.
The memory map split the memory map into regions. Each region has a defined memory type,
and some regions have additional memory attributes. The memory type and attributes determine
the behavior of accesses to the region.
The memory types are:
32MB
1MB
1MB
32MB
Bit band region
Bit band region
Bit band alias
Bit band alias
“About the Cortex-M3 peripherals” on page
“Bit-banding” on page
59.
Private peripheral
Vendor-specific
External device
External RAM
Peripheral
memory
SRAM
Code
bus
150.
511MB
1.0MB
1.0GB
1.0GB
0.5GB
0.5GB
0.5GB
SAM3N
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