User Manual

CompactFlash Memory Card Interface Description
CompactFlash
®
Memory Card Product Manual, Rev. 10.0 © 2002 SANDISK CORPORATION 3-9
3.3.6. Common and Attribute Memory Write Timing
The write timing specifications for Common and Attribute memory are the same.
Table 3-8. Common and Attribute Memory Write Timing Specifications
100 ns Speed Version Item Symbol
IEEE
Symbol
Min Max
Write Cycle Time t
c
(W) tAVAV 100
Write Pulse Width t
w
(WE) tWLWH 60
Address Setup Time
1
t
su
(A) tAVWL 10
Address Setup Time for -WE
1
t
su
(A-WEH) tAVWH 70
Card Enable Setup Time for -WE t
su
(CE-WEH) tELWH 70
Data Setup Time from -WE t
su
(D-WEH) tDVWH 40
Data Hold Time t
h
(D) tWMDX 15
Write Recover Time t
rec
(WE) tWMAX 15
Output Disable Time from -WE t
dis
(WE) tWLQZ 50
Output Disable Time from -OE t
dis
(OE) tGHQZ 50
Output Enable Time from -WE t
en
(WE) tWHQNZ 5
Output Enable Time from -OE t
en
(OE) tGLQNZ 5
Output Enable Setup from -WE t
su
(OE-WE) tGHWL 10
Output Enable Hold from -WE t
h
(OE-WE) tWHGL 10
Card Enable Setup Time t
su
(CE) tELWL 0
Card Enable Hold Time t
h
(CE) tGHEH 15
1. The -REG signal timing is identical to address signal timing.
2. SanDisk CompactFlash Memory Cards do not assert the -WAIT signal.
NOTE: All timings measured at the CompactFlash Memory Card. Skews and delays from the system
driver/receiver to the CompactFlash Memory Card must be accounted for by the system.