CompactFlash Memory Card Product Manual
SanDisk CompactFlash Memory Card Product Manual © 1998 SANDISK CORPORATION32
4.3.8 Common Memory Read Timing
Specification
Table 4-5 Common Memory Read Timing
Item Symbol IEEE Symbol Min ns. Max ns.
Output Enable Access Time ta(OE) tGLQV 125
Output Disable Time from OE tdis(OE) tGHQZ 100
Address Setup Time tsu(A) tAVGL 30
Address Hold Time th(A) tGHAX 20
CE Setup before OE tsu(CE) tELGL 0
CE Hold following OE th(CE) tGHEH 20
Wait Delay Falling from OE tv(WT-OE) tGLWTV 35
Data Setup for Wait Release tv(WT) tQVWTH 0
Wait Width Time (Default Speed) tw(WT) tWTLWTH 350
An
-REG
Dout
tsu(A)
-CE
-OE
tsu(CE)
-WAIT
tdis(OE)
tw(WT)
tv(WT-OE)
tv(WT)
ta(OE)
th(A)
th(CE)
Figure 4-3 Common Memory Read Timing Diagram
Notes: The maximum load on -WAIT is 1 LSTTL with 50pF total load. All times are in nanoseconds.
Dout signifies data provided by the CompactFlash Memory 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 (in the slowest mode) can be determined from the Card Information Structure.
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