Datasheet

Electrical characteristics STM32F20xxx
134/184 DS6329 Rev 16
Figure 58. Asynchronous non-multiplexed SRAM/PSRAM/NOR write waveforms
1. Mode 2/B, C and D only. In Mode 1, FSMC_NADV is not used.
Table 73. Asynchronous non-multiplexed SRAM/PSRAM/NOR write timings
(1)(2)
1. C
L
= 30 pF.
2. Guaranteed by characterization results, not tested in production.
Symbol Parameter Min Max Unit
t
w(NE)
FSMC_NE low time 3 T
HCLK
3 T
HCLK
+ 4 ns
t
v(NWE_NE
) FSMC_NEx low to FSMC_NWE low T
HCLK
– 0.5 T
HCLK
+ 0.5 ns
t
w(NWE)
FSMC_NWE low time T
HCLK
– 0.5 T
HCLK
+ 3 ns
t
h(NE_NWE)
FSMC_NWE high to FSMC_NE high hold
time
T
HCLK
-ns
t
v(A_NE)
FSMC_NEx low to FSMC_A valid - 0 ns
t
h(A_NWE)
Address hold time after FSMC_NWE high T
HCLK
- 3 - ns
t
v(BL_NE)
FSMC_NEx low to FSMC_BL valid - 0.5 ns
t
h(BL_NWE)
FSMC_BL hold time after FSMC_NWE
high
T
HCLK
– 1 - ns
t
v(Data_NE)
Data to FSMC_NEx low to Data valid - T
HCLK
+ 5 ns
t
h(Data_NWE)
Data hold time after FSMC_NWE high T
HCLK
+ 0.5 - ns
t
v(NADV_NE)
FSMC_NEx low to FSMC_NADV low - 2 ns
t
w(NADV)
FSMC_NADV low time - T
HCLK
+ 1.5 ns
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