EtronTech

Em614163A-30/35/40/45

Etron Technology, Inc.

1F, No. 1, Prosperity Rd. 1, Science-Based Industrial Park, Hsinchu, Taiwan, R.O.C.

TEL: (886)-3-5782345 FAX: (886)-3-5779001

Etro n Techn olo gy, Inc . rese rves th e right to make c han ges to its pro duc ts and spe cificat ion s

April 1997

without notice.

256K x 16 High Speed EDO DRAM

Preliminary

Features

• Fast Access Time: 30/35/40/45ns

• Fast EDO Page Cycle Time: 13.3/15/16/18ns

• EDO Page Mode Operation

• Single +5V ¡Ó10% Power Supply

• Low Power Dissipation

• Individual Byte Control via Dual CAS Inputs

• Three Refresh Modes

• 512-Cycle Refresh in 8ms(9 rows and 9 columns)

• TTL Compatible

• 40-Pin, 400-mil Plastic SOJ Package, or

40/44-Pin, 400-mil Plastic TSOP-II Package.

Ordering Information

Part Number

Speed

Package

Em614163A-30

30ns

SOJ

EM614163TS-30

30ns

TSOP-II

Em614163A-35

35ns

SOJ

EM614163TS-35

35ns

TSOP-II

Em614163A-40

40ns

SOJ

EM614163TS-40

40ns

TSOP-II

Em614163A-45

45ns

SOJ

EM614163TS-45

45ns

TSOP-II

Key Specifications

Speed

-30

30ns

9ns

16ns

9ns

53ns

13.3ns

-35

35ns

10ns

18ns

9ns

60ns

15ns

-40

40ns

11ns

20ns

10ns

66ns

16ns

-45

45ns

12ns

22ns

10ns

75ns

18ns

Overview

Pin Assignment (Top View)

40-Pin SOJ

40/44-Pin TSOP-II

Vcc

I/ O0

I/ O1

I/ O2

I/ O3

Vcc

I/ O4

I/ O5

I/ O6

I/ O7

NC

NC

WE

RAS

NC

A0

A1

A2

A3

Vcc

Vss

I/ O15

I/ O14

I/ O13

I/ O12

Vss

I/ O11

I/ O10

I/ O9

I/ O8

NC

LCAS

UCAS

OE

A8

A7

A6

A5

A4

Vss

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

Vcc

I/ O0

I/ O1

I/ O2

I/ O3

Vcc

I/ O4

I/ O5

I/ O6

I/ O7

NC

NC

WE

RAS

NC

A0

A1

A2

A3

Vcc

Vss

I /O 15

I /O 14

I /O 13

I /O 12

Vss

I /O 11

I /O 10

I /O 9

I /O 8

NC

LC AS

UCAS

O E

A8

A7

A6

A5

A4

Vss

1

2

3

4

5

6

7

8

9

10

13

14

15

16

17

18

19

20

21

22

44

43

42

41

40

39

38

37

36

35

32

31

30

29

28

27

26

25

24

23

Pin Names

A0 - A8

Address Inputs

RAS

Row Address Strobe

UCAS

Column Address Strobe

(Upper Byte Control)

LCAS

Column Address Strobe

(Lower Byte Control)

WE

Write Enable

OE

Output Enable

I/O0 - I/O15

Data Input/Output

+5V Power Supply

Ground

NC

No Connection

The Em614163A-30/35/40/45 is a high speed

EDO(Extended Data Output) DRAM organized in

262,144 words by 16 bits. It supports EDO Page

Mode and 16-bit data width for high data bandwidth

applications.

The

EDO

Page

Mode

is

an

accelerated access that provides a shorter page

cycle and a faster data access time than the

traditional Fast Page Mode.

Compared with Fast Page Mode DRAM, the

precharge time to occur without the output data

condensed to carry more data out in a given period.

The Em614163A-30/35/40/45 fully utilizes the

EDO Page Mode advantages. It allows 512 random

access within a page with a fast cycle time as short

as 13.3/15/16/18 ns.

The Em614163A-30/35/40/45 is ideally suitable

for high performance graphics frame buffers, CD-

ROMs, disk drivers, set top boxes, and DSP

applications.