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SMC032AF Datasheet(PDF) 22 Page - Numonyx B.V

Part # SMC032AF
Description  32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte and 512 Mbyte 3.3 V / 5 V supply CompactFlash??card
PDF  82 Pages
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Manufacturer  NUMONYX [Numonyx B.V]
Direct Link  http://www.numonyx.com
Logo NUMONYX - Numonyx B.V

SMC032AF Datasheet(HTML) 22 Page - Numonyx B.V

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Command interface
SMCxxxAF
22/82
5
Command interface
There are two types of bus cycles and timing sequences that occur in the PCMCIA type
interface, direct mapped I/O transfer and memory access. Table 16, Table 17, Table 18,
Table 19, Table 20, Table 21 and Table 22 show the read and write timing parameters.
Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7 and Figure 8 show the read and
write timing diagrams.
Note, the wait width time is intentionally less than the PCMCIA specification of 12 µs. Its
maximum value can be determined from the card information structure.
Figure 2.
Attribute memory Read timing diagram
1.
DOUT signifies data provided by the CompactFlash memory card to the system. The -CE signal or both the -OE signal and
the -WE signal must be de-asserted between consecutive cycle operations.
AI10080
tc(R)
ta(A)
tv(A)
ta(CE)
ten(OE)
VALID
Address Inputs
D0 to D15 (DOUT)
VALID
–REG
–CE2/–CE1
–OE
tsu(A)
ten(CE)
tdis(OE)
tdis(CE)
ta(OE)
Table 16.
Attribute memory Read timing
Speed version
300 ns
Symbol
IEEE symbol
Parameter
Min
Max
Unit
tc(R)
tAVAV
Read Cycle time
300
ns
ta(A)
tAVQV
Address Access time
300
ns
ta(CE)
tELQV
CE Access time
300
ns
ta(OE)
tGLQV
OE Access time
150
ns
tdis(CE)
tEHQZ
Output Disable time from CE
100
ns
tdis(OE)
tGHQZ
Output Disable time from OE
100
ns
ten(CE)
tELQNZ
Output Enable time from CE
5
ns
ten(OE)
tGLQNZ
Output Enable time from OE
5
ns
tv(A)
tAXQX
Data Valid from Address Change
0
ns
tsu(A)
tAVGL
Address Setup time
30
ns



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