IS61C256AL 查看數據表（PDF） - Integrated Silicon Solution

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IS61C256AL

32K x 8 HIGH-SPEED CMOS STATIC RAM

Integrated Silicon Solution 

IS61C256AL

PIN CONFIGURATION

28-Pin SOJ

A14 1

A12 2

A7 3

A6 4

A5 5

A4 6

A3 7

A2 8

A1 9

A0 10

I/O0 11

I/O1 12

I/O2 13

GND 14

28 VDD

27 WE

26 A13

25 A8

24 A9

23 A11

22 OE

21 A10

20 CE

19 I/O7

18 I/O6

17 I/O5

16 I/O4

15 I/O3

PIN CONFIGURATION

28-Pin TSOP

OE 22

A11 23

A9 24

A8 25

A13 26

WE 27

VDD 28

A14 1

A12 2

A7 3

A6 4

A5 5

A4 6

A3 7

ISSI ®

21 A10

20 CE

19 I/O7

18 I/O6

17 I/O5

16 I/O4

15 I/O3

14 GND

13 I/O2

12 I/O1

11 I/O0

10 A0

9 A1

8 A2

PIN DESCRIPTIONS

A0-A14

CE

OE

WE

I/O0-I/O7

VDD

GND

Address Inputs

Chip Enable Input

Output Enable Input

Write Enable Input

Bidirectional Ports

Power

Ground

TRUTH TABLE

Mode

WE

Not Selected X

(Power-down)

Output Disabled H

Read

H

Write

L

CE OE I/O Operation VDD Current

HX

High-Z

ISB1, ISB2

LH

High-Z

ICC

LL

DOUT

ICC

LX

DIN

ICC

ABSOLUTE MAXIMUM RATINGS(1)

Symbol

Parameter

Value

Unit

VTERM

Terminal Voltage with Respect to GND

–0.5 to +7.0

V

TSTG

Storage Temperature

–65 to +150

°C

PT

Power Dissipation

1.5

W

IOUT

DC Output Current (LOW)

20

mA

Note:

1. Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a

stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational

sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect

reliability.

2

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

Rev. B

10/23/06

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