Integrated Silicon Solution, Inc. — 1-800-379-4774

1

Rev. J

06/29/00

ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible product. We assume no responsibility for any

errors which may appear in this publication. © Copyright 2000, Integrated Silicon Solution, Inc.

IS41C16256

IS41LV16256

FEATURES

• TTL compatible inputs and outputs

• Refresh Interval: 512 cycles/8 ms

• Refresh Mode :

RAS-Only, CAS-before-RAS

(CBR), and Hidden

• JEDEC standard pinout

• Single power supply

5V ± 10% (IS41C16256)

3.3V ± 10% (IS41LV16256)

• Byte Write and Byte Read operation via two

CAS

• Extended Temperature Range -30

• Industrail Temperature Range -40

DESCRIPTION

The

high-performanceCMOSDynamicRandomAccessMemory. Both

products offer accelerated cycle access EDO Page Mode. EDO

Page Mode allows 512 random accesses within a single row with

access cycle time as short as 10ns per 16-bit word. The Byte Write

control, of upper and lower byte, makes the IS41C16256 and

IS41LV16256idealforusein16and32-bitwidedatabussystems.

These features make the IS41C16256 and IS41LV1626 ideally

suited for high band-width graphics, digital signal processing,

high-performance computing systems, and peripheral applications.

The IS41C16256 and IS41LV16256 are packaged in 40-pin

400-mil SOJ and TSOP (Type II).

256K x 16

(4-MBIT) DYNAMIC RAM

JUNE 2000

WITH EDO PAGE MODE

KEY TIMING PARAMETERS

Parameter

-35

-50

-60

Unit

Max.

3550

60ns

Max.

1014

15ns

1825

30ns

1220

25ns

60

90

110

ns

PIN CONFIGURATIONS

40-Pin TSOP (Type II)

40-Pin SOJ

PIN DESCRIPTIONS

A0-A8

Address Inputs

I/O0-15

Data Inputs/Outputs

WE

Write Enable

OE

Output Enable

RAS

Row Address Strobe

UCAS

Upper Column Address Strobe

LCAS

Lower Column Address Strobe

Vcc

Power

GND

Ground

NC

No Connection

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

GND

I/O15

I/O14

I/O13

I/O12

GND

I/O11

I/O10

I/O9

I/O8

NC

LCAS

UCAS

OE

A8

A7

A6

A5

A4

GND

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

GND

I/O15

I/O14

I/O13

I/O12

GND

I/O11

I/O10

I/O9

I/O8

NC

LCAS

UCAS

OE

A8

A7

A6

A5

A4

GND