PCMCIA Flash Memory Card
FLV Series
White Electronic Designs
AC CHARACTERISTICS - WRITE TIMING PARAMETERS
200ns
250ns
SYMBOL (PCMCIA)
Parameter
Unit
Min
150
80
Max
Min
250
150
30
Max
tCW
tW(WE)
Write Cycle Time
Write Pulse Width
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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#)
tEN(WE)
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
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 2.1 specifications.
WRITE TIMING DIAGRAM
tC(W)
A[25::0], REG#
t
SU(A-WEH)
SU(CE-WEH)
SU(CE)
tREC(WE)
tH(CE)
t
t
CE1#, CE2#
NOTE 1
NOTE 1
OE#
tH(OE-WE)
tSU(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:
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 (D15 - D0) by the host system.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
June, 2003
Rev. 5
7
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com