MB82DP04184E-65L Datasheet, PDF (9/31 Pages) Fujitsu Component Limited. – 64M Bit (4 M word × 16 bit) Mobile Phone Application Specific Memory

MB82DP04184E-65L
(2) Write Operation
(Under recommended operating conditions unless otherwise noted)
Parameter
Symbol
Value
Min
Max
Unit
Notes
Write Cycle Time
tWC
65
1000
ns *1, *2
Address Setup Time
tAS
0
⎯
ns *3
CE1 Write Pulse Width
tCW
40
⎯
ns *2, *3
WE Write Pulse Width
tWP
40
⎯
ns *2, *3
LB, UB Write Pulse Width
tBW
40
⎯
ns *2, *3
LB, UB Byte Mask Setup Time
tBS
−5
⎯
ns *4
LB, UB Byte Mask Hold Time
tBH
−5
⎯
ns *5
Write Recovery Time
tWR
0
⎯
ns *2, *6
CE1 High Pulse Width
tCP
10
⎯
ns
WE High Pulse Width
tWHP
10
1000
ns *7
LB, UB High Pulse Width
tBHP
10
1000
ns *7
Data Setup Time
tDS
12
⎯
ns
Data Hold Time
tDH
0
⎯
ns
OE High to CE1 Low Setup Time for Write
tOHCL
−5
⎯
ns *8
OE High to Address Setup Time for Write
tOES
0
⎯
ns *9
*1 : Maximum value is applicable if CE1 is kept at Low without any address change.
*2 : The sum of actual write pulse (tCW,tWP or tBW) and actual write recovery time (tWR) must be equal or greater
than specified minimum tWC.
*3 : Write pulse is defined from High to Low transition of CE1, WE, LB or UB, whichever occurs last.
*4 : Applicable for byte mask only. Byte mask setup time is defined to the High to Low transition of CE1 or WE
whichever occurs last.
*5 : Applicable for byte mask only. Byte mask hold time is defined from the Low to High transition of CE1 or WE
whichever occurs first.
*6 : Write recovery is defined from Low to High transition of CE1, WE, LB or UB, whichever occurs first.
*7 : Maximum values of tWHP and tBHP are applicable to Output Disable mode when CE1 = L, WE = OE = H after
write operation. Refer to “(7) Write Timing 2 (WE Control)” in “■TIMING DIAGRAMS”.
*8 : If OE is Low after minimum tOHCL, read cycle is initiated. In other words, OE must be brought to High within
5 ns after CE1 is brought to Low.
*9 : If OE is Low after a new address input, read cycle is initiated. In other words, OE must be brought to High
at the same time or before the new address valid.
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