Datasheet

Electrical characteristics STM32F20xxx
140/184 DS6329 Rev 16
Figure 63. Synchronous non-multiplexed NOR/PSRAM read timings
t
d(CLKL-NWEL)
FSMC_CLK low to FSMC_NWE low - 1 ns
t
d(CLKL-NWEH)
FSMC_CLK low to FSMC_NWE high 0 - ns
t
d(CLKL-ADIV)
FSMC_CLK low to FSMC_AD[15:0] invalid 0 - ns
t
d(CLKL-DATA
) FSMC_A/D[15:0] valid data after FSMC_CLK low - 2 ns
t
d(CLKL-NBLH)
FSMC_CLK low to FSMC_NBL high 0.5 - ns
1. C
L
= 30 pF.
2. Guaranteed by characterization results, not tested in production.
Table 78. Synchronous non-multiplexed NOR/PSRAM read timings
(1)(2)
Symbol Parameter Min Max Unit
t
w(CLK)
FSMC_CLK period 2 T
HCLK
-ns
t
d(CLKL-NExL)
FSMC_CLK low to FSMC_NEx low (x=0..2) - 0 ns
t
d(CLKL-NExH)
FSMC_CLK low to FSMC_NEx high (x= 0…2) 1 - ns
t
d(CLKL-NADVL)
FSMC_CLK low to FSMC_NADV low - 2.5 ns
Table 77. Synchronous multiplexed PSRAM write timings
(1)(2)
(continued)
Symbol Parameter Min Max Unit
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