PCMCIA Flash Memory Card
FLE Series
White Electronic Designs
AC CHARACTERISTICS
Write Timing Parameters
150ns
SYM (PCMCIA)
tCW
Parameter
Min
150
80
Max
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
Address Setup Time
Address Setup Time for WE#
tsu(A)
20
tsu(A-WEH)
tsu(CE-WEH)
tsu(D-WEH)
th(D)
100
Card Enable Setup Time for WE#
Data Setup Time for WE#
Data Hold Time
100
50
20
trec(WE)
tdis(WE)
tdis(OE)
Write Recover Time
20
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
ten(WE)
5
5
ten(OE)
tsu(OE-WE)
th(OE-WE)
tsu(CE)
10
10
0
th(CE)
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#
tsu(A-WEH)
trec(WE)
th(CE)
tsu(CE-WEH)
tsu(CE)
CE1#, CE2#
OE#
NOTE 1
NOTE 1
th(OE-WE)
th(D)
tw(WE)
tsu(A)
WE#
tsu(OE-WE)
NOTE 2
tsu(D-WEH)
D[15::0](Din)
DATA INPUT
tdis(WE)
tdis(OE)
ten(OE)
ten(WE)
NOTE 2
D[15::0](Dout)
Note:
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.
August 2000
Rev. 4
8
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com