External Device Address Mapping - STMicroelectronics STM32F405 Reference Manual

RM0090
Configuration registers
The FMC can be configured through a set of registers. Refer to
detailed description of the NOR Flash/PSRAM controller registers. Refer to
for a detailed description of the NAND Flash/PC Card registers and to
detailed description of the SDRAM controller registers.
37.4

External device address mapping

From the FMC point of view, the external memory is divided into 6 fixed-size banks of
256 Mbyte each (see
•
Bank 1 used to address up to 4 NOR Flash memory or PSRAM devices. This bank is
split into 4 NOR/PSRAM subbanks with 4 dedicated Chip Selects, as follows:
–
–
–
–
•
Banks 2 and 3 used to address NAND Flash memory devices (1 device per bank)
•
Bank 4 used to address a PC Card
•
Bank 5 and 6 used to address SDRAM devices (1 device per bank).
For each bank the type of memory to be used can be configured by the user application
through the Configuration register.
Figure 455):
Bank 1 - NOR/PSRAM 1
Bank 1 - NOR/PSRAM 2
Bank 1 - NOR/PSRAM 3
Bank 1 - NOR/PSRAM 4
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Flexible memory controller (FMC)
Section 37.5.6, for a
Section
Section 37.7.5
37.6.8,
for a
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