CompactFlash Memory Card Product Manual
SanDisk CompactFlash Memory Card Product Manual © 1998 SANDISK CORPORATION
33
4.3.9
Common Memory Write Timing
Specification
Table 4-6 Common Memory Write Timing
I t e m
Symbol
IEEE Symbol
Min ns.
M a x n s .
Data Setup before WE
tsu(D-WEH)
tDVWH
80
Data Hold following WE
th(D)
tlWMDX
30
WE Pulse Width
tw(WE)
tWLWH
150
Address Setup Time
tsu(A)
tAVWL
30
CE Setup before WE
tsu(CE)
tELWL
0
Write Recovery Time
trec(WE)
tWMAX
30
CE Hold following WE
th(CE)
tGHEH
20
Wait Delay Falling from WE
tv(WT-WE)
tWLWTV
35
WE High from Wait Release
tv(WT)
tWTHWH
0
Wait Width Time (Default Speed)
tw (WT)
tWTLWTH
350
Figure 4-4 Common Memory Write Timing Diagram
Notes:
The maximum load on -WAIT is 1 LSTTL with 50pF total load. All times are in nanoseconds.
Din signifies data provided by the system to the CompactFlash Memory 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 (in the slowest mode) can be determined from the Card Information Structure.
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