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T
S
3
2
M
~
1
G
C
F
T
S
3
2
M
~
1
G
C
F
T
S
3
2
M
~
1
G
C
F
3.8 Common Memory Write Timing Specification
Item
Data Setup before WE
Data Hold following WE
WE Pulse Width
Address Setup Time
CE Setup before WE
Write Recovery Time
Address Hold Time
CE Hold following WE
Wait Delay Falling from WE
WE High from Wait Release
Wait Width Time
2
Notes: 1) –WAIT is not supported in this mode.
2) The maximum load on -WAIT is 1 LSTTL with 50 pF (40pF below 120nsec Cycle Time) total load. All times are in
nanoseconds. Din signifies data provided by the system to the CompactFlash Storage Card. The -WAIT signal may be
ignored if the -WE cycle to cycle time is greater than the Wait Width time. The Max Wait Width time can be determined from
the Card Information Structure. The Wait Width time meets the PCMCIA PC Card specification of 12µs but is intentionally
less in this specification.
Transcend Information Inc.
8
0
8
0
8
0
Cycle Time Mode:
Symbol
tsu (D-WEH)
th(D)
tw(WE)
tsu(A)
tsu(CE)
trec(WE)
th(A)
th(CE)
tv (WT-WE)
tv(WT)
tw (WT)
250 ns
IEEE
Min
Max
Symbol
ns.
ns.
tDVWH
80
tWMDX
30
tWLWH
150
tAVWL
30
tELWL
0
tWMAX
30
tGHAX
20
tGHEH
20
tWLWTV
35
tWTHWH
0
tWTLWTH
350
22
80X CompactFlash Card
120 ns
100 ns
Min
Max
Min
Max
ns.
ns.
ns.
ns.
50
40
15
10
70
60
15
10
0
0
15
15
15
15
15
15
35
35
0
0
350
350
80 ns
Ma
Min
x
ns.
ns.
30
10
55
10
0
15
15
10
na
1
na
1
na
1
V 1 . 1
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