Table 181. Fsmc_Bcrx Bit Fields; Figure 402. Modea Write Accesses - ST STM32F205 series Reference Manual

Flexible static memory controller (FSMC)
The differences compared with mode1 are the toggling of NOE and the independent read
and write timings.
Bit
number
31-20
19
18:16
15
14
13
12
11
10
9
8
7
6
5-4
3-2
1272/1378

Figure 402. ModeA write accesses

A[25:0]
NBL[1:0]
NEx
NOE
NWE
D[15:0]

Table 181. FSMC_BCRx bit fields

Bit name
Reserved 0x000
CBURSTRW 0x0 (no effect on asynchronous mode)
CPSIZE 0x0 (no effect on asynchronous mode)
Set to 1 if the memory supports this feature. Otherwise keep at
ASYNCWAIT
0.
EXTMOD 0x1
WAITEN 0x0 (no effect on asynchronous mode)
WREN As needed
WAITCFG Don't care
WRAPMOD 0x0
WAITPOL Meaningful only if bit 15 is 1
BURSTEN 0x0
Reserved 0x1
FACCEN Don't care
MWID As needed
MTYP[0:1] As needed, exclude 0x2 (NOR Flash)
RM0033 Rev 8
Memory transaction
ADDSET
HCLK cycles
1HCLK
data driven by FSMC
(DATAST + 1)
HCLK cycles
Value to set
RM0033
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