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SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

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 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. 

This memory mapping is generic to ARM Cortex-M4 products. To get the specific memory mapping of this product, refer
to the Memories section of the datasheet.

The memory map and the programming of the MPU 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.

Vendor-specific

memory

External device

External RAM

Peripheral

SRAM

Code

0xFFFFFFFF

Private peripheral

bus

0xE0100000
0xE00FFFFF

0x9FFFFFFF

0xA0000000

0x5FFFFFFF

0x60000000

0x3FFFFFFF

0x40000000

0x1FFFFFFF

0x20000000

0x00000000

0x40000000

32 MB Bit band alias

0x400FFFFF

0x42000000

0x43FFFFFF

1 MB Bit Band region

32 MB Bit band alias

0x20000000

0x200FFFFF

0x22000000

0x23FFFFFF

1.0GB

1.0GB

0.5GB

0.5GB

0.5GB

0x DFFFFFFF

0xE00

0

0000

1.0MB

511MB

1 MB Bit Band region