White Electronic Designs
PCMCIA Flash Memory Card
FLV Series
AC C
HARACTERISTICS
- W
RITE
T
IMING
P
ARAMETERS
200ns
SYMBOL (PCMCIA)
t
C
W
t
W
(WE)
t
SU
(A)
t
SU
(A-WEH)
t
SU
(CE-WEH)
t
SU
(D-WEH)
t
H
(D)
t
REC
(WE)
t
DIS
(WE)
t
DIS
(OE)
t
EN
(WE)
t
EN
(OE)
t
SU
(OE-WE)
t
H
(OE-WE)
t
SU
(CE)
t
H
(CE)
Parameter
Write Cycle Time
Write Pulse Width
Address Setup Time
Address Setup Time for WE
Card Enable Setup Time for WE
Data Setup Time for WE
Data Hold Time
Write Recover Time
Output Disable Time from WE
Output Disable Time from OE
Output Enable Time from WE
Output Enable Time from OE
Output Enable Setup from WE
Output Enable Hold from WE
Card Enable Setup Time from OE
Card Enable Hold Time
5
5
10
10
0
20
Min
150
80
20
100
100
50
20
20
75
75
5
5
10
10
0
20
Max
Min
250
150
30
180
180
80
30
30
100
100
250ns
Max
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note:
AC timing diagrams and characteristics are guaranteed to meet or exceed PCMCIA 2.1 specifications.
WRITE TIMING DIAGRAM
t
C
(W)
A[25::0], REG
t
SU
(A-WEH)
t
SU
(CE-WEH)
t
SU
(CE)
t
REC
(WE)
t
H
(CE)
NOTE 1
CE
1
, CE
2
NOTE 1
OE
t
H
(OE-WE)
t
SU
(A)
WE
t
H
(D)
t
SU
(OE-WE)
NOTE 2
t
W
(WE)
t
SU
(D-WEH)
DATA INPUT
D[15::0](D
IN
)
t
DIS
(WE)
t
DIS
(OE)
t
EN
(WE)
D[15::0](D
OUT
)
NOTE 2
t
EN
(OE)
Notes:
1. Signal may be high or low in this area.
2. When the data I/O pins are in the output state, no signals shall be applied to the data pins (D
15
- D
0
) by the host system.
7
White Electronic Designs Corporation (508) 485-4000 www.whiteedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
