MB81N643289 Datasheet, PDF (41/64 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT DOUBLE DATA RATE FCRAMTM

MB81N643289-50/-60 Preliminary (AE1E)
TIMING DIAGRAM – 2 : RANDOM READ WITH AUTO-CLOSE
(Timing assumes CL=3, Same Bank Access)
CLK
CLK
lRCD
lRDA
Command ACTV
NOP
RDA
NOP
ACTV
NOP
RDA
NOP
ACTV
NOP
DQ
(Output)
Hi-Z
@BL = 2
DQS
(Output) ^Hi-Z
@BL = 2
Q1 Q2
CL
Q1 Q2
CL
lRCD
Command ACTV
NOP
RDA
lRDA
NOP
ACTV
NOP
RDA
NOP
ACTV
NOP
DQ
Hi-Z
(Output)
@BL = 4
DQS
Hi-Z
(Output)
@BL = 4
Q1 Q2 Q3 Q4
CL
Q1 Q2 Q3 Q4
CL
lRCD
lRDA
Command ACTV
NOP
RDA
NOP
ACTV
NOP
RDA
NOP
DQ
(Output)
Hi-Z
@BL = 8
DQS
(Output) ^Hi-Z
@BL = 8
Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8
CL
Note: lRDA : Latency of Read with Auto Close command.
Q1 Q2 Q3 Q4
CL
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