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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
12
34
58
10
6
7
K
RPS
WPS
A
D
READ READ WRITE WRITEWRITE
NOPREAD
WRITE NOP
9
A0
t
KH
t
KHKH
t
KL
t
CYC
tt
HC
t
SA
t
HA
t
SD
t
HD
SC
t
t
SA
t
HA
t
SD
t
HD
A6A5
A3 A4
A1
A2
D30 D50 D51 D61
D31
D11D10 D60
Q
C
C
DON’T CARE
UNDEFINED
t
CQ
CQ
t
KHCH
t
CO
t
KHCH
t
CLZ
CHZ
t
KH
t
KL
Q00 Q01
Q20
t
KHKH
t
CYC
Q21
Q40
Q41
t
CQD
t
DOH
t
CCQO
t
CQOH
t
CCQO
t
CQOH
t
CQDOH
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