Memory and bus architecture RM0090
72/1731 DocID018909 Rev 11
0x0400 0000 - 0x07FF FFFF Reserved Reserved Reserved
FMC bank 1
NOR/PSRAM 2
(128 MB Aliased)
0x0000 0000 -
0x001F FFFF
(1)(2)
Flash (2 MB) Aliased
SRAM1 (112 KB)
Aliased
System memory
(30 KB) Aliased
FMC bank 1
NOR/PSRAM 1
(128 MB Aliased)
or FMC SDRAM
bank 1 (128 MB
Aliased)
1. When the FMC is remapped at address 0x0000 0000, only the first two regions of bank 1 memory controller (bank 1
NOR/PSRAM 1 and NOR/PSRAM 2) or SDRAM bank 1 can be remapped. In remap mode, the CPU can access the
external memory via ICode bus instead of System bus which boosts up the performance.
2. Even when aliased in the boot memory space, the related memory is still accessible at its original memory space.
Table 4. Memory mapping vs. Boot mode/physical remap
in STM32F42xxx and STM32F43xxx (continued)
Addresses
Boot/Remap in
main Flash memory
Boot/Remap in
embedded SRAM
Boot/Remap in
System memory
Remap in FMC
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