Cypress CY7C1294DV18 - Manual (Page 20)

CY7C1292DV18
CY7C1294DV18
Document #: 001-00350 Rev. *A Page 20 of 23
Switching Waveforms [27, 28, 29]
Read/Write/Deselect Sequence
Notes:
27. Q00 refers to output from address A0. Q01 refers to output from the next internal burst address following A0, i.e., A0 + 1.
28. Output are disabled (High-Z) one clock cycle after a NOP.
29. In this example, if address A2 = A1,then data Q20 = D10 and Q21 = D11. Write data is forwarded immediately as read results. This note applies to the whole
diagram.
K
1 2 3 4 5 8 10 6 7
K
RPS
WPS
A
D
READ READ WRITE WRITE WRITE NOP READ WRITE NOP
9
A0
tKH tKHKH tKL tCYC
t tHC
tSA tHA
tSD tHD
SC
t
tSA tHA
tSD tHD
A6 A5 A3 A4 A1 A2
D30 D50 D51 D61 D31 D11 D10 D60
Q
C
C
DON’T CARE UNDEFINED
t
CQ
CQ
tKHCH
tCO
tKHCH
tCLZ
CHZ
tKH
tKL
Q00 Q01 Q20
tKHKH tCYC
Q21 Q40 Q41
tCQD
tDOH
tCCQO
tCQOH
tCCQO
tCQOH
tCQDOH
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