Cypress CY7C1473BV33 Manual Do Utilizador

Document #: 001-15029 Rev. *B

Page 25 of 32

 shows read-write timing waveform.

[20, 21, 22]

W RITE

D(A1)

1

2

3

4

5

6

7

8

9

CLK

tCYC

tCL

tCH

10

CE

tCEH

tCES

W E

CEN

tCENH

tCENS

BW

X

ADV/LD

tAH

tAS

ADDRESS

A1

A2

A3

A4

A5

A6

A7

tDH

tDS

DQ

COM M AND

tCLZ

D(A1)

D(A2)

Q(A4)

Q(A3)

D(A2+1)

tDOH

tCHZ

tCDV

W RITE

D(A2)

BURST
W RITE

D(A2+1)

READ

Q(A3)

READ

Q(A4)

BURST

READ

Q(A4+1)

W RITE

D(A5)

READ

Q(A6)

W RITE

D(A7)

DESELECT

OE

tOEV

tOELZ

tOEHZ

DON’T CARE

UNDEFINED

D(A5)

tDOH

Q(A4+1)

D(A7)

Q(A6)

20. For this waveform ZZ is tied LOW.
21. When CE is LOW, CE

1

 is LOW, CE

2

 is HIGH, and CE

3

 is LOW. When CE is HIGH, CE

1

 is HIGH, CE

2 

is LOW or CE

3

 is HIGH.

22. Order of the Burst sequence is determined by the status of the MODE (0 = Linear, 1 = Interleaved). Burst operations are optional.