AK681024GI-55 [ACCUTEK]

SRAM Module, 1MX8, 55ns, CMOS;


型号：	AK681024GI-55
厂家：	ACCUTEK MICROCIRCUIT CORPORATION
描述：	SRAM Module, 1MX8, 55ns, CMOS 静态存储器内存集成电路
文件：	总2页 (文件大小：165K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Accutek

Microcircuit

Corporation

AK681024G

1,048,579 x 8 Bit CMOS

Static Random Access Memory

DESCRIPTION

The Accutek AK681024G is a high density SRAM memory module

organized in 1 Meg X 8 bit words. The assembly consists of four me-

dium speed 128K X 8 SRAMs in thin TSOP packages, plus a CMOS

decoder logic IC and four decoupling capacitor chips, mounted on

the front side and four medium speed 128K x 8 SRAMS in thin

TSOP packages and four decoupling capacitor chips mounted on

the back side of a low-profile printed circuit board. The module con-

figuration is a 36 pin leaded SIP.

The memory operates as a single asynchronous 1 Meg X 8 SRAM

from a 5V supply, and has common I/O, chip enable, output enable

and write enable functions. With the proper choice of SRAMs, it is

available in three separate low-standby-power configurations, with

access times of 55, 70, 85 or 100 nSEC.

The combination of low power, low profile and high density packag-

ing offered by the AK681024G makes it ideal for use in applications

where board space and available power are limited and extremely

low access times are not required. It is especially useful in VMEbus

designs and in places where very close module-to-module spacing

is dictated.

· Range of access times from 55 to 100 nSEC

· Low, low-low and ultra-low standby power level versions avail-

able

· Single 5 volt power supply - AK681024G

FEATURES

· Single 3.3 volt power supply - AK681024G/3.3

· Operating free air temerature 0⁰C to 70⁰C (Industrial range

· 1,048,576 x 8 bit organization

version of -10⁰C to 85⁰C also available)

· JEDEC Standard 36 pin SIP format

· Common I/O, single OE, CE and WE functions

· Completely static and asynchronous, no clock or timing strobe

required

· Low 0.550 inch maximum seated height and thin profile allow

maximum board density

Low

90 Watt Max Active

120 µ Watt Max Standby

Low Low

90 Watt Max Active

80 µ Watt Standby

PIN NOMENCLATURE

PIN ASSIGNMENT

FUNCTIONAL DIAGRAM

PIN #

SYMBOL

PIN #

SYMBOL

A₄

PIN #

SYMBOL

PIN #

SYMBOL

A₇

DQ₀- DQ₇

A₀- A₁₉

Data In/Data Out

128K x 8 SRAM

Address Inputs

Chip Enable

Write Enable

Output Enable

5v Supply

Vcc

DQ₂

DQ₃

DQ₀

A₁

Vss

DQ₅

A₁₀

A₁₅

A₁₆

A₁₂

A₁₈

A₆

A₈

A₉

DQ₇

DQ₄

DQ₆

A₁₇

A₁₁

A₅

A₁₃

DQ₁

Vss

A₀

Vcc

A₂

A₁₄

Vcc

Vss

Ground

A₃

A₁₉

No Connection

MODULE OPTIONS

Leaded SIP: AK681024G

DECODER

ORDERING INFORMATION

MECHANICAL DIMENSIONS

Inches

PART NUMBER CODING INTERPRETATION

Position

Product

0.550"

= Accutek Memory

Type

4 = Dynamic RAM

5 = CMOS Dynamic RAM

6 = Static RAM

Organization/Word Width

1 = by 1 16 = by 16

4 = by 4 32 = by 32

8 = by 8 36 = by 36

9 = by 9

Size/Bits Depth

64 = 64K

4096 = 4 MEG

8192 = 8 MEG

1024 = 1 MEG 16384 = 16 MEG

256 = 256K

Package Type

G = Single In-Line Package (SIP)

S = Single In-Line Module (SIM)

D = Dual In-Line Package (DIP)

W = .050 inch Pitch Edge Connect

Z = Zig-Zag In-Line Package (ZIP)

Special Designation

P = Page Mode

N = Nibble Mode

K = Static Column Mode

W = Write Per Bit Mode

V = Video Ram

Separator

= Commercial 0⁰C to +70⁰C

M = Military Equivalent Screened

(-55⁰C to +125⁰C)

= Industrial Temperature Tested

(-45⁰C to +85⁰C)

X = Burned In

Speed (first two significant digits)

SRAMS

DRAMS

60 nS

70 nS

80 nS

12 nS

20 nS

25 nS

35 nS

100 nS 35

The numbers and coding on this page do not include all variations

available but are shown as examples of the most widely used

variations. Contact Accutek if other information is required.

EXPAMPLES:

AK681024G-70LL

1 Meg x 8, 70 nSEC Low Low Power SRAM Module, SIP Configuration

ACCUTEK MICROCIRCUIT CORPORATION

BUSINESS CENTER at NEWBURYPORT

2 NEW PASTURE ROAD, SUITE 1

NEWBURYPORT, MA 01950-4054

VOICE: 978-465-6200 FAX: 978-462-3396

Accutek reserves the right to make changes in specifications at any

time and without notice. Accutek does not assume any responsibility

for the use of any circuitry described; no circuit patent licenses are

implied. Preliminary data sheets contain minimum and maximum

limits based upon design objectives, which are subject to change

upon full characterization over the specific operating conditions.

Email: sales@accutekmicro.com

Internet: www.accutekmicro.com

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