ST STM32F40 Series Reference Manual page 1344

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RM0090
Figure 419. Asynchronous wait during a write access
A[25:0]
NWAIT
D[15:0]
1. NWAIT polarity depends on WAITPOL bit setting in FSMC_BCRx register.
address phase
NEx
don't care
NWE
Doc ID 018909 Rev 4
Flexible static memory controller (FSMC)
Memory transaction
data setup phase
don't care
data driven by FSMC
3HCLK
1HCLK
1344/1422
ai15797c

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