MB81N643289 Datasheet, PDF (37/64 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT DOUBLE DATA RATE FCRAMTM

MB81N643289-50/-60 Preliminary (AE1E)
s AC CHARACTERISTICS (continued)
Fig. 8 – AC TIMING of CLK & CLK
CLK
CLK
tCK
tCL
tOH
VX
VSWING(AC)
Note: Reference level for AC timings of clock are the cross point of CLK and CLK as specified in VX.
CLK
CLK
Input
(Controls &
Addresses)
Fig. 9 – AC TIMING of Command Input & Address
tCK
VX
tIS
tIH
Input Valid
VREF
VIH (AC)
VIL (AC)
Note: The cross point of CLK and CLK (VX) is used for command and address input.
The reference level of single ended input is VREF.
Fig. 10 – AC TIMING of Write Mode (Data Strobe, Write Data and Data Mask Input)
CLK
CLK
tCK
tCK
Input
(Controls &
Addresses)
DQS Input VREF
(@BL=4)
tIS
tIH
Write Command
VREF
tDQSS
VIH (AC)
VIL (AC)
tDSPRES
tDSPREH
tDSPRE
VIL
tDQSS
tDIPW
tDSS
tDIPW
tDSH
tDIPW
tDSPST
tDS tDH
tDS tDH
tDS tDH
tDS tDH
VREF
Input
(Data&DM)
Input Valid
tDIPW
Input Valid Input Valid
Input Valid
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