Datasheet

DocID028087 Rev 4 149/193
STM32F412xE/G Electrical characteristics
161
Figure 52. Asynchronous multiplexed PSRAM/NOR read waveforms
1. C
L
= 30 pF.
2. Based on characterization, not tested in production.
Table 86. Asynchronous non-multiplexed SRAM/PSRAM/NOR write -
NWAIT timings
(1)(2)
1. C
L
= 30 pF.
2. Based on characterization, not tested in production.
Symbol Parameter Min Max Unit
t
w(NE)
FSMC_NE low time 8T
HCLK
- 1 8T
HCLK
+ 0.5
ns
t
w(NWE)
FSMC_NWE low time 6T
HCLK
+ 0.5 6T
HCLK
+ 1
t
su(NWAIT_NE)
FSMC_NWAIT valid before FSMC_NEx high 6T
HCLK
+ 0.5 -
t
h(NE_NWAIT)
FSMC_NEx hold time after FSMC_NWAIT
invalid
4T
HCLK
+ 1 -
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