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SMC032AF 데이터시트(PDF) 29 Page - Numonyx B.V

부품명 SMC032AF
상세설명  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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제조업체  NUMONYX [Numonyx B.V]
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SMC032AF 데이터시트(HTML) 29 Page - Numonyx B.V

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Table 22.
True IDE mode I/O Read/Write timing diagram
Symbol
Parameter(1)
Mode 0Mode 1Mode 2Mode 3Mode 4
Unit
t0
(2)
Cycle time (min)
600
383
240
180
120
ns
t1
Address Valid to -IORD/-IOWR
setup (min)
70
50
30
30
25
ns
t2
(2)
-IORD/-IOWR (min)
165
125
100
80
70
ns
t2
(2)
-IORD/-IOWR (min) register (8
bit)
290
290
290
80
70
ns
t2i
(2)
-IORD/-IOWR recovery time (min)
-
-
-
70
25
ns
t3
-IOWR data setup (min)
60
45
30
30
20
ns
t4
-IOWR data hold (min)
30
20
15
10
10
ns
t5
-IORD data setup (min)
50
35
20
20
20
ns
t6
-IORD data hold (min)
5
5
5
5
5
ns
t6Z
(3)
-IORD data tri-state (max)
30
30
30
30
30
ns
t7
(4)
Address valid to -IOCS16
assertion (max)
90
50
40
N/A
N/A
ns
t8
(4)
Address valid to -IOCS16
released (max)
60
45
30
N/A
N/A
ns
t9
-IORD/-IOWR to address valid
hold
20
15
10
10
10
ns
1.
The maximum load on -IOCS16 is 1 LSTTL with a 50 pF total load.
2.
t0 is the minimum total cycle time, t2 is the minimum command active time, and t2i is the minimum command recovery time
or command inactive time. The actual cycle time equals the sum of the actual command active time and the actual
command inactive time. The three timing requirements of t0, t2, and t2i have to be met. The minimum total cycle time
requirement is greater than the sum of t2 and t2i. This means a host implementation can lengthen either or both t2 or t2i to
ensure that t0 is equal to or greater than the value reported in the device's identify drive data. A CompactFlash memory
card implementation should support any legal host implementation.
3.
This parameter specifies the time from the falling edge of -IORD to the moment when the data bus is no longer driven by
the CompactFlash memory card (tri-state).
4.
t7 and t8 apply only to modes 0, 1 and 2. This signal is not valid for other modes.



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