MB81N643289 Datasheet, PDF (33/64 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT DOUBLE DATA RATE FCRAMTM

MB81N643289-50/-60 Preliminary (AE1E)
s AC CHARACTERISTICS (continued)
EXAMPLE OF FREQUENCY DEPENDANT AC PARAMETERS (@ Minimum tCK)
Parameter
Clock High Time
Clock Low Time
tCK = 5ns tCK = 6ns tCK = 7.5ns tCK = 9ns tCK = 10.5ns
Symbol
Unit
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
tCH 2.3 — 2.7 — 3.4 — 4.1 — 4.8 — ns
tCL 2.3 — 2.7 — 3.4 — 4.1 — 4.8 — ns
DQS Low to High Input
Transition Setup Time
from CLK
CL=2
CL=3
tDQSS
3.8 6.3 4.5 7.5 5.7 9.4 6.8 11.3 7.9 13.2
ns
8.8 11.3 10.5 13.5 13.2 16.9 15.8 20.3 18.4 23.7
DQS First Low Input Hold Time
(Input Preamble Hold Time)
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
Data Access Time from CLK
Data Output Valid Time
DQS Output in Low-Z
(Output Preamble Setup Time)
DQS First Low Output Hold Time
(Output Preamble Hold Time)
DQS Last Low Output Hold Time
(Output Postamble Hold Time)
DQS Last Low Output in High-Z
from CLK to CLK
QS Pulse Width
Data Output Valid Time from DQS
Data Output skew from DQS
DQ Output in Low-Z
DQ Output in High-Z
tDSPREH 1.3 — 1.5 — 1.9 — 2.3 — 2.7 — ns
tDSPRE 2.0 3.0 2.4 3.6 3.0 4.5 3.6 5.4 4.2 6.3 ns
tDSPST 2.0 3.0 2.4 3.6 3.0 4.5 3.6 5.4 4.2 6.3 ns
tDIPW 1.8 — 2.1 — 2.7 — 3.2 — 3.7 — ns
tDSS 1.5 — 1.5 — 1.5 — 1.8 — 2.1 — ns
tDSH 1.5 — 1.5 — 1.5 — 1.8 — 2.1 — ns
tCKQS –0.7 0.7 –0.8 0.8 –1.0 1.0 –1.1 1.1 –1.3 1.3 ns
tAC –0.7 0.7 –0.8 0.8 –1.0 1.0 –1.1 1.1 –1.3 1.3 ns
tOH –0.7 0.7 –0.8 0.8 –1.0 1.0 –1.1 1.1 –1.3 1.3 ns
tQSLZ –0.7 — –0.8 — –1.0 — –1.1 — –1.3 — ns
tQSPRE 4.3 5.7 5.2 6.8 6.6 8.5 7.9 10.1 9.3 11.8 ns
tQSPST 1.8 3.2 2.2 3.8 2.8 4.7 3.4 5.6 4.0 6.5 ns
tQSHZ — 0.7 — 0.8 — 1.0 — 1.1 — 1.3 ns
tQSP 1.8 — 2.2 — 2.8 — 3.4 — 4.0 — ns
tQSQV 1.6 — 2.0 — 2.6 — 3.2 — 3.8 — ns
tQSQ –0.5 0.5 –0.6 0.6 –0.8 0.8 –0.9 0.9 –1.1 1.1 ns
tLZ –0.7 — –0.8 — –1.0 — –1.1 — –1.3 — ns
tHZ –0.7 0.7 –0.8 0.8 –1.0 1.0 –1.1 1.1 –1.3 1.3 ns
33