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
Item Symbol IEEE Symbol Min ns. Max ns.
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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