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Switching waveforms – Cypress CY7C1410JV18 User Manual

Page 23

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CY7C1410JV18, CY7C1425JV18
CY7C1412JV18, CY7C1414JV18

Document #: 001-12561 Rev. *D

Page 23 of 26

Switching Waveforms

Figure 3. Read/Write/Deselect Sequence

[25, 26, 27]

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

tCQH

tCQHCQH

Notes

25. Q00 refers to output from address A0. Q01 refers to output from the next internal burst address following A0, that is, A0+1.
26. Outputs are disabled (High-Z) one clock cycle after a NOP.
27. 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.

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