AK5322048W-80 - Accutek Microcircuit Corporation

DESCRIPTION

The Accutek AK53220482W high density memory module is a

CMOS dynamic RAM organized in 2048 x 32 bit words. The module

consists of sixteen standard 1 Meg x 4 DRAMs in plastic SOJ pack-

ages. The assembly has eight drams mounted on each side of a

printed circuit board in a 72 pad leadless SIM configuration.

This configuration allows socket-mounting of large quantities of

memory in applications where high density and ease of inserting ad-

ditional memory are important.

The operation of the AK5322048 is identical to sixteen 1Meg x 4

Drams. There are four CAS lines and four RAS lines. On each bank

of 1Meg x 32, independent byte control is accomplished by the four

CAS lines, where each seperate CAS line controls two 1Meg x 4

Drams. Two banks of 32 bits are controlled by the two pairs of RAS

lines. A sixteen bit data path can be produced by connecting DQ1to

DQ17,DQ

2to DQ18, and alternately strobing RAS0with RAS1and

RAS2with RAS3.

FEATURES

·2,097,152 x 32 bit organization

·72 pad Single In-Line Module

·Multiple CAS and RAS lines allow x16 or x32 bit widths

·CAS-before-RAS,RAS-only or hidden refresh

·Operating free air temperature 0oCto70

·Single 5 Volt Power Supply

·2048 Refresh Cycles

·Available in Fast Page Mode EDO versions

·Power

5.32 Watt Max Active (60nS)

4.44 Watt Max Active (70 nS)

3.79 Watt Max Active (80 nS)

88 mW Max Standby

·Available in leadless SIM or leaded Zip versions

·Downward compatible with AK5321024, AK532512 and

AK532256

·Upward compatible with AK5324096 and AK5328192

ADDITIONAL OPTIONS AVAILABLE

·256K x 32 Version, AK532256

·512K x 32 version, AK532512

·1 Meg x 32 version, AK5321024

·4 Meg x 32 version, AK5324096

·8 Meg x 32 version, AK5328192

Accutek

Microcircuit

Corporation

AK5322048W

2,097,152 Word by 32 Bit CMOS

Dynamic Random Access Memory

PIN NOMENCLATURE

DQ0-DQ

31 Data In/Data Out

A0-A

9Address Inputs

CAS0- CAS3Column Address Strobe

RAS0- RAS3Row Address Strobe

WE Write Enable

PD1-PD

4Presence Detect

Vcc 5V Supply

Vss Ground

NC No Connect

MODULE OPTIONS

Leadless SIM: AK5322048W

Leaded ZIP: AK5322048Z

PIN ASSIGNMENT

Pin # Symbol Pin # Symbol Pin # Symbol Pin # Symbol

1 Vss 19 NC 37 NC 55 DQ11

2 DQ0 20 DQ4 38 NC 56 DQ27

3 DQ16 21 DQ20 39 Vss 57 DQ12

4 DQ1 22 DQ5 40 CAS0 58 DQ28

5 DQ17 23 DQ21 41 CAS2 59 Vcc

6 DQ2 24 DQ6 42 CAS3 60 DQ29

7 DQ18 25 DQ22 43 CAS1 61 DQ13

8 DQ3 26 DQ7 44 RAS0 62 DQ30

9 DQ19 27 DQ23 45 RAS1 63 DQ14

10 Vcc 28 A7 46 NC 64 DQ31

11 NC 29 NC 47 WE 65 DQ15

12 A0 30 Vcc 48 NC 66 NC

13 A1 31 A8 46 DQ8 67 PD1

14 A2 32 A9 50 DQ24 68 PD2

15 A3 33 RAS3 51 DQ9 69 PD3

16 A4 34 RAS2 52 DQ25 70 PD4

17 A5 35 NC 53 DQ10 71 NC

18 A6 36 NC 54 DQ26 72 Vss

Presence Detect -1 Meg x 32 Presence Detect-2Megx32

-60 -70 -80 -60 -70 -80

PD1 Vss Vss Vss PD1 NC NC NC

PD2 Vss Vss Vss PD2 NC NC NC

PD3 NC Vss NC PD3 NC Vss NC

PD4 NC NC Vss PD4 NC NC Vss

FUNCTIONAL DIAGRAM

MECHANICAL DIMENSIONS

A0-A9

RAS

CAS

A0-A9

RAS

CAS

A0 - A9

RAS

CAS

A0-A9

RAS

CAS

A0 - A9

RAS

CAS

DQ0 - DQ3

A0-A9

RAS

CAS

DQ0 - DQ3

A0-A9

RAS

CAS

DQ0 - DQ3

A0 - A9

RAS

CAS

DQ0 - DQ3

CAS0

CAS2

RAS0 DQ0 - DQ3

DQ16 - DQ19

DQ4 - DQ7

DQ20 - DQ23

RAS1

RAS3

RAS2

A0-A9

RAS

CAS

A0 - A9

RAS

CAS

DQ0 - DQ3

A0 - A9

RAS

CAS

A0-A9

RAS

CAS

A0 - A9

RAS

CAS

DQ0 - DQ3

A0-A9

RAS

CAS

DQ0 - DQ3

A0-A9

RAS

CAS

DQ0 - DQ3

A0-A9

RAS

CAS

DQ0 - DQ3

CAS1

CAS3

DQ8 - DQ11

DQ24 - DQ27

DQ12 - DQ15

DQ28 - DQ31

A0-A9

1.000"

MAX

0.330"

MAX

0.425"

0.375" 0.250"

0.080" 0.125" 0.050"

TYP

4.250"

3.985"

ACCUTEK MICROCIRCUIT CORPORATION

BUSINESS CENTER at NEWBURYPORT

2 NEW PASTURE ROAD, SUITE 1

NEWBURYPORT, MA 01950-4054

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

Email: sales@accutekmicro.com

Internet: www.accutekmicro.com

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. Pre-

liminary data sheets contain minimum and maximum limits based upon

design objectives, which are subject to change upon full characterization

over the specific operating conditions.