Switching Waveforms (continued)

CY7C1024DV33

Switching Waveforms (continued)

Figure 6. Write Cycle No. 2 (WE Controlled, OE HIGH During Write) [3, 16, 17]

 

 

tWC

 

ADDRESS

 

 

 

 

 

tSCE

 

CE

 

 

 

 

tAW

 

tHA

 

tSA

tPWE

 

WE

 

 

 

OE

 

 

 

 

 

tSD

t

 

 

 

HD

DATA I/O

NOTE 18

DATAIN VALID

 

 

tHZOE

 

 

Figure 7. Write Cycle No. 3 (WE Controlled, OE LOW) [3, 17]

 

 

tWC

 

ADDRESS

 

 

 

 

 

tSCE

 

CE

 

 

 

 

tAW

 

tHA

 

tSA

tPWE

 

WE

 

 

 

 

 

tSD

tHD

DATA I/O

NOTE 18

DATA VALID

 

 

tHZWE

 

tLZWE

Truth Table

CE1

CE2

CE3

OE

WE

I/O0 – I/O23

Mode

Power

H

X

X

X

X

High Z

Power Down

Standby (ISB)

X

L

X

X

X

High Z

Power Down

Standby (ISB)

X

X

H

X

X

High Z

Power Down

Standby (ISB)

L

H

L

L

H

Full Data Out

Read

Active (ICC)

L

H

L

X

L

Full Data In

Write

Active (ICC)

L

H

L

H

H

High Z

Selected, Outputs Disabled

Active (ICC)

Note

18. During this period, the I/Os are in the output state and input signals are not applied.

Document Number: 001-08353 Rev. *C

Page 7 of 9

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Cypress CY7C1024DV33 Truth Table, Switching Waveforms continued, Write Cycle No. 3 WE Controlled, OE LOW, I/O 0 - I/O