Datasheet

Electrical characteristics STM32F20xxx
146/184 DS6329 Rev 16
Figure 70. PC Card/CompactFlash controller waveforms for I/O space write access
Table 80. Switching characteristics for PC Card/CF read and write cycles in
attribute/common space
(1)(2)
1. C
L
= 30 pF.
2. Guaranteed by characterization results, not tested in production.
Symbol Parameter Min Max Unit
t
v(NCEx-A)
FSMC_Ncex low to FSMC_Ay valid - 0 ns
t
h(NCEx_AI)
FSMC_NCEx high to FSMC_Ax invalid 4 - ns
t
d(NREG-NCEx)
FSMC_NCEx low to FSMC_NREG valid - 3.5 ns
t
h(NCEx-NREG)
FSMC_NCEx high to FSMC_NREG invalid T
HCLK
+ 4 - ns
t
d(NCEx-NWE)
FSMC_NCEx low to FSMC_NWE low - 5T
HCLK
+ 1 ns
t
d(NCEx-NOE)
FSMC_NCEx low to FSMC_NOE low - 5T
HCLK
ns
t
w(NOE)
FSMC_NOE low width 8T
HCLK
– 0.5 8T
HCLK
+ 1 ns
t
d(NOE_NCEx)
FSMC_NOE high to FSMC_NCEx high 5T
HCLK
+ 2.5 - ns
t
su (D-NOE)
FSMC_D[15:0] valid data before FSMC_NOE high 4 - ns
t
h (N0E-D)
FSMC_N0E high to FSMC_D[15:0] invalid 2 - ns
t
w(NWE)
FSMC_NWE low width 8T
HCLK
- 1 8T
HCLK
+ 4 ns
t
d(NWE_NCEx
) FSMC_NWE high to FSMC_NCEx high 5T
HCLK
+ 1.5 - ns
t
d(NCEx-NWE)
FSMC_NCEx low to FSMC_NWE low - 5HCLK+ 1 ns
t
v (NWE-D)
FSMC_NWE low to FSMC_D[15:0] valid - 0 ns
t
h (NWE-D)
FSMC_NWE high to FSMC_D[15:0] invalid 8T
HCLK
-ns
t
d (D-NWE)
FSMC_D[15:0] valid before FSMC_NWE high 13T
HCLK
-ns
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