CY7C1318CV18
CY7C1320CV18

Document Number: 001-07160 Rev. *F Page 22 of 26

Switching Waveforms
Figure 5. Read/Write/Deselect Sequence[26, 27, 28]

READ READREAD NOP NOP WRITEWRITE

NOP

12345678910

Q40
tKHCH
tCO
ttHC
ttHA
tSD
tHD
tKHCH
tSD
tHD
DON’T CARE UNDEFINED
tCLZ tDOH tCHZ
SC
tKH tKHKH
tKL tCYC
A0
D20 D21 D30 D31
Q00 Q11Q01 Q10
A1 A2 A3 A4
Q41
tCCQO
tCQOH
tCCQO
tCQOH
tKL tCYC
K
K
LD
R/W
A
DQ
C
C#
CQ
CQ#
SA
tKH tKHKH
tCQD
tCQDOH
tCQH tCQHCQH
Notes
26.Q00 refers to output from address A0. Q01 refers to output from the next internal burst address following A0, that is, A0 + 1.
27.Outputs are disabled (High-Z) one clock cycle after a NOP.
28.In this example, if address A4 = A3, then data Q40 = D30 and Q41 = D31. Write data is forwarded immediately as read results. This note applies to the whole diagram.
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