Data Sheet M14078EJ4V0DS

7

µµµµPD4416004

Write Cycle

Parameter

Symbol

-A 15

-A 17

Unit

Notes

MIN.

MAX.

MIN.

MAX.

Write cycle time

15

17

ns

/CS to end of write

10

11

ns

Address valid to end of write

10

11

ns

Write pulse width

10

11

ns

Data valid to end of write

78

ns

Data hold time

00

ns

Address setup time

00

ns

Write recovery time

11

ns

/WE to output in high impedance

7

8

ns

1, 2

Output active from end of write

33

ns

Notes 1. Transition is measured at

± 200 mV from steady-state voltage with the output load shown in Figure 2.

2. These parameters are periodically sampled and not 100% tested.

Write Cycle Timing Chart 1 (/WE Controlled)

Indefinite data output

High

impe-

dance

Data input

Indefinite data output

Address (Input)

/CS (Input)

/WE (Input)

High

impe-

dance

I/O (Input / Output)

Cautions 1. /CS or /WE should be fixed to high level during address transition.

2. Do not input data to the I/O pins while they are in the output state.

Remarks 1. Write operation is done during the overlap time of a low level /CS, a low level /WE.

must not be applied.

3. When /WE is at low level, the I/O pins are always high impedance. When /WE is at high level, read

operation is executed. Therefore /OE should be at high level to make the I/O pins high impedance.

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