
PCMCIA Flash Memory Card
FLV Series
7
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
June, 2003
Rev. 5
White Electronic Designs Corp. reserves the right to change products or specications without notice.
SYMBOL (PCMCIA)
Parameter
200ns
250ns
Unit
Min
Max
Min
Max
tCW
Write Cycle Time
150
250
ns
tW(WE)
Write Pulse Width
80
150
ns
tSU(A)
Address Setup Time
20
30
ns
tSU(A-WEH)
Address Setup Time for WE#
100
180
ns
tSU(CE-WEH)
Card Enable Setup Time for WE#
100
180
ns
tSU(D-WEH)
Data Setup Time for WE#
50
80
ns
tH(D)
Data Hold Time
20
30
ns
tREC(WE)
Write Recover Time
20
30
ns
tDIS(WE)
Output Disable Time from WE#
75
100
ns
tDIS(OE#)
Output Disable Time from OE#
75
100
ns
tEN(WE)
Output Enable Time from WE#
5
ns
tEN(OE#)
Output Enable Time from OE#
5
ns
tSU(OE#-WE)
Output Enable Setup from WE#
10
ns
tH(OE#-WE)
Output Enable Hold from WE#
10
ns
tSU(CE)
Card Enable Setup Time from OE#
0
ns
tH(CE)
Card Enable Hold Time
20
ns
AC CHARACTERISTICS - WRITE TIMING PARAMETERS
Note: AC timing diagrams and characteristics are guaranteed to meet or exceed PCMCIA 2.1 specications.
WRITE TIMING DIAGRAM
A[25::0], REG#
tC(W)
CE1#, CE2#
OE#
D[15::0](DIN)
tW(WE)
tSU(A)
NOTE 1
DATA INPUT
tSU(A-WEH)
tSU(CE)
NOTE 1
tREC(WE)
tH(CE)
tSU(OE-WE)
tH(D)
tEN(WE)
D[15::0](DOUT)
WE#
tSU(CE-WEH)
tH(OE-WE)
tDIS(OE)
tDIS(WE)
NOTE 2
tSU(D-WEH)
tEN(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 (D15 - D0) by the host system.