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W2465, Write cycle 1, Write cycle 2 – Rainbow Electronics W2465 User Manual

Page 6: Oe = v, Fixed)

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W2465

- 6 -

Timing Waveforms, continued

Write Cycle 1

Address

OE

CS1

CS2

WE

(1, 4)

D

OUT

D

IN

T

WR1

T

WC

T

CW1

T

CW2

T

WR2

T

WP

T

AS

T

OHZ

T

DW

T

DH

T

AW

Write Cycle 2

(OE = V

IL

Fixed)

Address

CS1

CS2

WE

(2)

(3)

D

OUT

D

IN

T

DW

T

DH

T

OW

T

OH

T

WR2

T

WC

T

CW1

T

WR1

T

CW2

T

AW

T

WP

T

AS

T

WHZ(1, 4)

Notes:

1. During this period, I/O pins are in the output state, so input signals of opposite phase to the outputs should not be applied.

2. The data output from D

OUT

are the same as the data written to D

IN

during the write cycle.

3. D

OUT

provides the read data for the next address.

4. Transition is measured

±

500 mV from steady state with C

L

= 5 pF. This parameter is guaranteed but not 100% tested.