Cypress CY7C1318JV18 - Manual (Page 23)

CY7C1316JV18, CY7C1916JV18
CY7C1318JV18, CY7C1320JV18
Document Number: 001-15271 Rev. *B Page 23 of 26
Switching Waveforms
Figure 3. Read/Write/Deselect Sequence [24, 25, 26]
READ READ READ NOP NOP WRITE WRITE NOP
1 2 3 4 5 6 7 8 9 10
Q40
t
KHCH
tCO
t tHC
t tHA
tSD
tHD
tKHCH
tSD
tHD
DON’T CARE UNDEFINED
tCLZ
tDOH tCHZ
SC
tKH tKHKH tKL tCYC
A0
D20 D21 D30 D31 Q00 Q11 Q01 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
24. Q00 refers to output from address A0. Q01 refers to output from the next internal burst address following A0, that is, A0 + 1.
25. Outputs are disabled (High-Z) one clock cycle after a NOP.
26. In this example, if address A2 = A1, then data D20 = Q10 and D21 = Q11. Write data is forwarded immediately as read results. This note applies to the whole diagram.
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