Table 86. Fmc_Bcrx Bit Fields; Figure 50. Muxed Write Access Waveforms - ST STM32L4 5 Series Reference Manual

RM0351
The difference with ModeD is the drive of the lower address byte(s) on the data bus.
Bit number
31:22
21
20
19
18:16
15
14
13
12
11
10
9
8
7
6
5:4

Figure 50. Muxed write access waveforms

Table 86. FMC_BCRx bit fields

Bit name
Reserved 0x000
As needed (this bit is reserved for STM32L475xx/476xx/486xx
WFDIS
devices)
CCLKEN As needed
CBURSTRW 0x0 (no effect in asynchronous mode)
CPSIZE 0x0 (no effect in asynchronous mode)
ASYNCWAIT Set to 1 if the memory supports this feature. Otherwise keep at 0.
EXTMOD 0x0
WAITEN 0x0 (no effect in asynchronous mode)
WREN As needed
WAITCFG Don't care
Reserved 0x0
WAITPOL Meaningful only if bit 15 is 1
BURSTEN 0x0
Reserved 0x1
FACCEN 0x1
MWID As needed
DocID024597 Rev 5
Flexible static memory controller (FSMC)
Value to set
441/1830
471