User's Manual
T
T
T
S
S
S
3
3
3
2
2
2
M
M
M
~
~
~
1
1
1
G
G
G
C
C
C
F
F
F
8
8
8
0
0
0
80X CompactFlash Card
Transcend Information Inc.
21
3.7 Common Memory Read Timing Specification
Cycle Time Mode:
250 ns
120 ns
100 ns
80 ns
Item
Symbol
IEEE
Symbol
Min
ns.
Max
ns.
Min
ns.
Max
ns.
Min
ns.
Max
ns.
Min
ns.
Ma
x
ns.
Output Enable Access Time ta(OE) tGLQV
125
60
50
45
Output Disable Time from OE
tdis(OE) tGHQZ
100
60
50
45
Address Setup Time tsu(A) tAVGL 30
15
10
10
Address Hold Time th(A) tGHAX 20
15
15
10
CE Setup before OE tsu(CE) tELGL 0
0
0
0
CE Hold following OE th(CE) tGHEH 20
15
15
10
Wait Delay Falling from OE
tv(WT-OE
)
tGLWTV
35
35
35
na
1
Data Setup for Wait Release
tv(WT) tQVWTH
0
0
0
na
1
Wait Width Time
2
tw(WT) tWTLWTH
350
350
350
na
1
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. Dout signifies data provided by the CompactFlash Storage Card to the system. The -WAIT signal may be ignored
if the -OE 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.