Table 270. Fmc_Btrx Bit Fields; Table 271. Fmc_Bwtrx Bit Fields - STMicroelectronics STM32F405 Reference Manual

Flexible memory controller (FMC)
Bit
number
5-4
3-2
1
0
Bit number
31-30
29-28
27-24
23-20
19-16
15-8
7-4
3-0
Bit number
31-30
29-28
27-24
23-20
19-16
15-8
7-4
3-0
Note: The FMC_BWTRx register is valid only if the extended mode is set (mode B), otherwise its
content is don't care.
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Table 269. FMC_BCRx bit fields (continued)
Bit name
MWID As needed
MTYP[1:0] 0x2 (NOR Flash memory)
MUXEN 0x0
MBKEN 0x1

Table 270. FMC_BTRx bit fields

Bit name
Reserved 0x0
ACCMOD 0x1 if extended mode is set
DATLAT Don't care
CLKDIV Don't care
BUSTURN Time between NEx high to NEx low (BUSTURN HCLK)
Duration of the access second phase (DATAST HCLK cycles) for
DATAST
read accesses.
ADDHLD Don't care
Duration of the access first phase (ADDSET HCLK cycles) for read
ADDSET[3:0]
accesses. Minimum value for ADDSET is 0.

Table 271. FMC_BWTRx bit fields

Bit name
Reserved 0x0
ACCMOD 0x1 if extended mode is set
DATLAT Don't care
CLKDIV Don't care
BUSTURN Time between NEx high to NEx low (BUSTURN HCLK)
Duration of the access second phase (DATAST HCLK cycles) for
DATAST
write accesses.
ADDHLD Don't care
Duration of the access first phase (ADDSET HCLK cycles) for write
ADDSET[3:0]
accesses. Minimum value for ADDSET is 0.
DocID018909 Rev 11
Value to set
Value to set
Value to set
RM0090