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Cypress CY7C1218H User Manual

Page 6

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CY7C1218H

Document #: 38-05667 Rev. *B

Page 6 of 16

Continue Write

Next

L

X

X

X

H

H

H

X

Tri-State

Write

Continue Write

Next

L

H

X

X

X

H

H

X

Tri-State

Write

Suspend Write

Current

L

X

X

X

H

H

H

X

Tri-State

Write

Suspend Write

Current

L

H

X

X

X

H

H

X

Tri-State

Write

ZZ “Sleep”

None

H

X

X

X

X

X

X

X

Tri-State

X

Truth Table for Read/Write

[2, 3]

Function

GW

BWE

BW

D

BW

C

BW

B

BW

A

Read

H

H

X

X

X

X

Read

H

L

H

H

H

H

Write Byte A – (DQ

A

and DQP

A

)

H

L

H

H

H

L

Write Byte B – (DQ

B

and DQP

B

)

H

L

H

H

L

H

Write Bytes B, A

H

L

H

H

L

L

Write Byte C – (DQ

C

and DQP

C

)

H

L

H

L

H

H

Write Bytes C, A

H

L

H

L

H

L

Write Bytes C, B

H

L

H

L

L

H

Write Bytes C, B, A

H

L

H

L

L

L

Write Byte D – (DQ

D

and DQP

D

)

H

L

L

H

H

H

Write Bytes D, A

H

L

L

H

H

L

Write Bytes D, B

H

L

L

H

L

H

Write Bytes D, B, A

H

L

L

H

L

L

Write Bytes D, C

H

L

L

L

H

H

Write Bytes D, C, A

H

L

L

L

H

L

Write Bytes D, C, B

H

L

L

L

L

H

Write All Bytes

H

L

L

L

L

L

Write All Bytes

L

X

X

X

X

X

Truth Table

[2, 3, 4, 5, 6, 7]

(continued)

Next Cycle

Add. Used

ZZ

CE

1

CE

2

CE

3

ADSP

ADSC

ADV

OE

DQ

Write

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