PCMCIA Flash Memory Card
FLV Series
White Electronic Designs
AC CHARACTERISTICS - WRITE TIMING PARAMETERS
200ns
Max
250ns
Max
SYMBOL (PCMCIA)
tCW
Parameter
Min
150
80
Min
250
150
30
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Write Cycle Time
tW(WE)
Write Pulse Width
tSU(A)
Address Setup Time
20
tSU(A-WEH)
tSU(CE-WEH)
tSU(D-WEH)
tH(D)
Address Setup Time for WE
Card Enable Setup Time for WE
Data Setup Time for WE
Data Hold Time
100
100
50
180
180
80
20
30
tREC(WE)
tDIS(WE)
tDIS(OE)
Write Recover Time
20
30
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
75
75
100
100
tEN(WE)
5
5
5
5
tEN(OE)
tSU(OE-WE)
tH(OE-WE)
tSU(CE)
10
10
0
10
10
0
tH(CE)
20
20
Note: AC timing diagrams and characteristics are guaranteed to meet or exceed PCMCIA 2ꢀ1 specificationsꢀ
WRITE TIMING DIAGRAM
tC(W)
A[25::0], REG
t
SU(A-WEH)
SU(CE-WEH)
SU(CE)
t
REC(WE)
t
H(CE)
t
t
CE1, CE2
NOTE 1
NOTE 1
OE
tH(OE-WE)
t
SU(A)
tW(WE)
WE
tH(D)
tSU(OE-WE)
tSU(D-WEH)
NOTE 2
D[15::0](DIN
)
DATA INPUT
tDIS(WE)
tEN(OE)
tDIS(OE)
tEN(WE)
NOTE 2
D[15::0](DOUT
)
Notes:
1ꢀ Signal may be high or low in this areaꢀ
2ꢀ When the data I/O pins are in the output state, no signals shall be applied to the data pins (D15 - D0) by the host systemꢀ
7
White Electronic Designs Corporation (508) 485-4000 wwwꢀwhiteedcꢀcom
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
