STM32F405xx, STM32F407xx
Electrical characteristics
Figure 68. PC Card/CompactFlash controller waveforms for I/O space write access
FSMC_NCE4_1
FSMC_NCE4_2
t
t
h(NCE4_1-AI)
v(NCEx-A)
FSMC_A[10:0]
FSMC_NREG
FSMC_NWE
FSMC_NOE
FSMC_NIORD
t
t
w(NIOWR)
d(NCE4_1-NIOWR)
FSMC_NIOWR
ATTxHIZ =1
t
h(NIOWR-D)
t
v(NIOWR-D)
FSMC_D[15:0]
ai14900c
Table 83. Switching characteristics for PC Card/CF read and write cycles
(1)(2)
in attribute/common space
Symbol
Parameter
Min
Max
Unit
tv(NCEx-A)
FSMC_Ncex low to FSMC_Ay valid
FSMC_NCEx high to FSMC_Ax invalid
-
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
th(NCEx_AI)
4
-
td(NREG-NCEx) FSMC_NCEx low to FSMC_NREG valid
th(NCEx-NREG) FSMC_NCEx high to FSMC_NREG invalid
td(NCEx-NWE) FSMC_NCEx low to FSMC_NWE low
td(NCEx-NOE) FSMC_NCEx low to FSMC_NOE low
-
3.5
THCLK+4
-
-
5THCLK+0.5
-
5THCLK +0.5
tw(NOE)
FSMC_NOE low width
8THCLK–1
5THCLK+2.5
4.5
8THCLK+1
td(NOE_NCEx) FSMC_NOE high to FSMC_NCEx high
-
tsu (D-NOE)
th(N0E-D)
tw(NWE)
FSMC_D[15:0] valid data before FSMC_NOE high
FSMC_N0E high to FSMC_D[15:0] invalid
FSMC_NWE low width
-
3
-
8THCLK–0.5
8THCLK+ 3
td(NWE_NCEx) FSMC_NWE high to FSMC_NCEx high
td(NCEx-NWE) FSMC_NCEx low to FSMC_NWE low
-
ns
5THCLK–1
-
5THCLK+ 1
ns
ns
ns
ns
tv(NWE-D)
FSMC_NWE low to FSMC_D[15:0] valid
-
0
-
th (NWE-D) FSMC_NWE high to FSMC_D[15:0] invalid
td (D-NWE) FSMC_D[15:0] valid before FSMC_NWE high
8THCLK –1
13THCLK –1
-
1. CL = 30 pF.
2. Based on characterization, not tested in production.
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STMICROELECTRONICS [ ST ]
