UPD23C64340 datasheet(11/20 Pages) NEC

11 / 20 page

µµµµPD23C64340, 23C64380

Data Sheet M16335EJ3V

1DS

Read Cycle Timing Chart 2 (Page Access Mode)

(Input)

/CE

(Input)

/OE or OE (Input)

tACC

Data Out

tCE

tOE

tPAC Note 5

O0 to O7,

O8 to O15Note 4

(Input)

(Output)

Data Out

High-Z

tOH

tDF Note 3

A2 to A21

A3 to A21

Upper addressNote 1

A–1Note 2, A0, A1

A–1Note 2, A0, A1, A2

Page addressNote 1

Notes 1. The address differs depending on the product as follows.

Part Number

Upper address

Page address

µPD23C64340

A2 to A21

A–1, A0, A1

µPD23C64380

A3 to A21

A–1, A0, A1, A2

2. During WORD mode, A–1 is O15.

3. tDF is the time from inactivation of Chip Enable input (/CE) or Output Enable input (/OE or OE) to

high impedance state output.

4. During BYTE mode, O8 to O14 are high impedance and O15 is A–1.

5. The definition of page access time is as follows.

[

µµµµPD23C64340 ]

Page access time

Upper address (A2 to A21)

/CE input condition

/OE or OE input condition

inputs condition

tPAC

Before tACC – tPAC

Before tCE – tPAC

Before stabilizing of page

address (A–1, A0, A1)

[

µµµµPD23C64380 ]

Page access time

Upper address (A3 to A21)

/CE input condition

/OE or OE input condition

inputs condition

tPAC

Before tACC – tPAC

Before tCE – tPAC

Before stabilizing of page

address (A–1, A0, A1, A2)

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