CY7C1480V33

Document Number: 38-05283 Rev. *N

Page 9 of 25

Truth Table for Read/Write

The following is a Truth Table for Read/Write for the CY7C1480V33. [9]

Function

GW

BWE

Read

H

H

X

X

X

X

Read

H

L

HH

HH

L

H

H

H

L

L

H

H

L

H

Write Bytes B, A

H

L

H

H

L

L

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

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

Note

9. The DQ pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock.