Switching waveforms, Read, Read write write nop nop – Cypress CY7C1415JV18 User Manual
Page 24
CY7C1411JV18, CY7C1426JV18
CY7C1413JV18, CY7C1415JV18
Document Number: 001-12557 Rev. *C
Page 24 of 28
Switching Waveforms
Figure 5. Read/Write/Deselect Sequence
K
1
2
3
4
5
6
7
RPS
WPS
A
Q
D
C
C
READ
READ
WRITE
WRITE
NOP
NOP
DON’T CARE
UNDEFINED
CQ
CQ
K
A0
A1
t KH
t KHKH
tKL
t
CYC
t
tHC
tSA
tHA
A2
SC
t
t HC
SC
A3
t KHCH
t KHCH
tCQD
t
CLZ
DOH
t
CHZ
t
t
tKL
t CYC
t CCQO
t
CCQO
t
CQOH
t CQOH
KHKH
KH
Q00
Q03
Q01
Q02
Q20
Q23
Q21
Q22
tCO
tCQDOH
t
t CQH
t CQHCQH
D10
D11
D12
D13
t
SD
tHD
tSD
t HD
D30
D31
D32
D33
Notes
27. Q00 refers to output from address A0. Q01 refers to output from the next internal burst address following A0, that is, A0+1.
28. Outputs 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.