Cypress manual Switching Waveforms, CY7C1516KV18, CY7C1527KV18 CY7C1518KV18, CY7C1520KV18, Read

CY7C1516KV18, CY7C1527KV18

CY7C1518KV18, CY7C1520KV18

Switching Waveforms

Figure 5. Read/Write/Deselect Sequence [26, 27, 28]

NOP		READ	READ
1		2	3
K
tKH	tKL	tCYC	tKHKH
K
LD	tSC
		tHC

R/W

NOP	NOP	WRITE	WRITE	READ
4	5	6	7	8	9	10

A A0 A1

tSA tHA

DQ

tKHCH tCLZ tCO

C

A2 A3

tHD

tSD

Q00 Q01 Q10	Q11
tCQDOH
tDOH	tCHZ
tCQD

A4

tHD

tSD

D21 D30 D31

Q41

t KHCH

C#

tKH tKL tCYC tKHKH

CQ

tCQOH

tCCQO

tCQOH

CQ#

tCCQO tCQH tCQHCQH

CARE

UNDEFINED

Notes

26.Q00 refers to output from address A0. Q01 refers to output from the next internal burst address following A0, that is, A0 + 1.

27.Outputs are disabled (High-Z) one clock cycle after a NOP.

28.In this example, if address A4 = A3, then data Q40 = D30 and Q41 = D31. Write data is forwarded immediately as read results. This note applies to the whole diagram.

Document Number: 001-00437 Rev. *E Page 25 of 30

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