UPD45128163G5-A10-9JF datasheet(8/92 Pages) NEC

Part #	UPD45128163G5-A10-9JF

Description	128M-bit Synchronous DRAM 4-bank, LVTTL

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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Data Sheet M12650EJBV0DS00

8

µµµµPD45128441, 45128841, 45128163

CONTENTS

1.

Input / Output Pin Function ............................................................................................................ 10

2.

Commands ....................................................................................................................................... 11

3.

Simplified State Diagram ................................................................................................................ 14

4.

Truth Table ....................................................................................................................................... 15

4.1

Command Truth Table............................................................................................................................. 15

4.2

DQM Truth Table ...................................................................................................................................... 15

4.3

CKE Truth Table....................................................................................................................................... 15

4.4

Operative Command Table .................................................................................................................... 16

4.5

Command Truth Table for CKE ............................................................................................................. 19

5.

Initialization ...................................................................................................................................... 20

6.

Programming the Mode Register ................................................................................................... 21

7.

Mode Register .................................................................................................................................. 22

7.1

Burst Length and Sequence .................................................................................................................. 23

8.

Address Bits of Bank-Select and Precharge ................................................................................ 24

9.

Precharge ......................................................................................................................................... 25

10. Auto Precharge ................................................................................................................................ 26

10.1

Read with Auto Precharge .................................................................................................................. 26

10.2

Write with Auto Precharge .................................................................................................................. 27

11. Read / Write Command Interval ..................................................................................................... 28

11.1

Read to Read Command Interval ........................................................................................................ 28

11.2

Write to Write Command Interval ....................................................................................................... 28

11.3

Write to Read Command Interval ........................................................................................................ 29

11.4

Read to Write Command Interval ........................................................................................................ 30

12. Burst Termination ........................................................................................................................... 31

12.1

Burst Stop Command .......................................................................................................................... 31

12.2

Precharge Termination ........................................................................................................................ 32

12.2.1

Precharge Termination in READ Cycle .................................................................................... 32

12.2.2

Precharge Termination in WRITE Cycle .................................................................................. 33

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Similar Description - UPD45128163G5-A10-9JF

Manufacturer	Part #	Datasheet	Description
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