MB81N643289 Datasheet, PDF (32/64 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT DOUBLE DATA RATE FCRAMTM

MB81N643289-50/-60 Preliminary (AE1E)
s AC CHARACTERISTICS (continued)
AC PARAMETERS (FREQUENCY DEPENDANT) Note *10
Parameter
Notes
Clock High Time
*4
Clock Low Time
*4
DQS Low to High Input Transition
Setup Time from CLK
*4, *11
DQS First Low Input Hold Time
(Input Preamble Hold Time)
*4
DQS First Low Input Pulse Width
(Input Preamble Pulse Width)
DQS Last Low Input Hold Time
(Input Postamble Hold Time)
DQ, DQS, DM Input Pulse Width
DQS Input Falling Edge to Clock
Setup Time
DQS Input Falling Edge to Clock
Hold Time
QS Access Time from Clock
*4
Data Access Time from CLK
*4
Data Output Valid Time
DQS Output in Low-Z
(Output Preamble Setup Time)
*4, *12
DQS First Low Output Hold Time
(Output Preamble Hold Time)
*4
DQS Last Low Output Hold Time
(Output Postamble Hold Time)
*4, *13
DQS Last Low Output in High-Z
from CLK to CLK
*4, *13
QS Pulse Width
Data Output Valid Time from DQS
Data Output skew from DQS
*5
DQ Output in Low-Z
*4, *12
DQ Output in High-Z
*4, *13
Symbol
tCH
tCL
tDQSS
tDSPREH
tDSPRE
tDSPST
tDIPW
tDSS
tDSH
tCKQS
tAC
tOH
tQSLZ
tQSPRE
tQSPST
tQSHZ
tQSP
tQSQV
tQSQ
tLZ
tHZ
Min.
0.45 * tCK
0.45 * tCK
(CL – 1 – 0.25) * tCK
0.25 * tCK
0.4 * tCK
0.4 * tCK
0.35 * tCK
0.2 * tCK
(1.5 ns min)
0.2 * tCK
(1.5 ns min)
– 0.1 * tCK – 0.2
– 0.1 * tCK – 0.2
– 0.1 * tCK – 0.2
– 0.1 * tCK – 0.2
0.9 * tCK – 0.2
0.4 * tCK – 0.2
—
0.4 * tCK – 0.2
0.4 * tCK – 0.4
– 0.1 * tCK
– 0.1 * tCK – 0.2
– 0.1 * tCK – 0.2
Max.
Unit
—
ns
—
ns
(CL – 1 + 0.25) * tCK ns
—
ns
0.6 * tCK
ns
0.6 * tCK
ns
—
ns
—
ns
—
ns
0.1 * tCK + 0.2
ns
0.1 * tCK + 0.2
ns
0.1 * tCK + 0.2
ns
—
ns
1.1 * tCK + 0.2
ns
0.6 * tCK + 0.2
ns
0.1 * tCK + 0.2
ns
—
ns
—
ns
0.1 * tCK
ns
—
ns
0.1 * tCK + 0.2
ns
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