AK581024AS-60 - Accutek Microcircuit Corporation

DESCRIPTION

The Accutek AK581024 high density memory modules is a random

access memory organized in 1 Meg x 8 bit words. The assembly

consists of two 1 Meg x 4 DRAMs in surface mount packages

mounted to a printed circuit board. The module can be configured

as a leadless 30 pad SIMM or a leaded 30 pin SIP. This packaging

approach provides a better than 6 to 1 density increase over stan-

dard DIP packaging.

The operation of the AK581024 is identical to two 1 Meg x 4 DRAMs.

The data input/output is brought out separately for each 1 Meg x 4

device, with common RAS, CAS and WE control. The OE pins are

tied to Vss which dictates the use of early-write cycles to prevent

contention of D and Q. Since the Write-Enable (WE) signal must al-

ways go low before CAS in a write cycle, Read-Write and

Read-Modify-Write operation is not possible.

FEATURES

·1 Meg x 8 bit organization

·Optional 30 Pad SIM (Single In-Line Module) or 30 Pin leaded

SIP (Single In-Line Package)

·JEDEC approved pinout

·Common CAS, RAS and WE control for eight DQ lines

·Separate CAS control for one separate pair of D and Q lines

·1024 refresh cycles/16ms, A0to A9

·1.10 Watt active and 23.5 mWatt standby (max)

·Operating free air temperature: 00to 700C

·Upward compatible with AK584096 and AK5816384

·Functionally and Pin compatible with AK481024

·Available with access times of 60 to 100 nS

Accutek

Microcircuit

Corporation

AK581024AG / AK581024AS

1,048,576 x 8 bit CMOS

Dynamic Random Access Memory

130

+ +

Front View

30-Pin SIM

30-Pin SIP

PIN NOMENCLATURE

DQ1-DQ

8Data In/Data Out

A0-A

9Address Inputs

CAS Column Address Strobe

RAS Row Address Strobe

WE Write Enable

Vcc 5v Supply

Vss Ground

NC No Connect

MODULE OPTIONS

Leadless SIM: AK581024ASP

Leaded SIP: AK581024AGP

PIN ASSIGNMENT

PIN # SYMBOL PIN # SYMBOL

1 Vcc 16 DQ5

2 CAS 17 A8

3 DQ1 18 A9

4A019NC

5 A1 20 DQ6

6 DQ2 21 WE

7 A2 22 Vss

8 A3 23 DQ7

9 Vss 24 NC

10 DQ3 25 DQ8

11 A4 26 NC

12 A5 27 RAS

13 DQ4 28 NC

14 A6 29 NC

15 A7 30 Vcc

FUNCTIONAL DIAGRAM

ORDERING INFORMATION

PART NUMBER CODING INTERPRETATION

Position 12345678

1 Product

AK = Accutek Memory

2 Type

4 = Dynamic RAM

5 = CMOS Dynamic RAM

6 = Static RAM

3 Organization/Word Width

1 = by 1 16 = by 16

4 = by 4 32 = by 32

8 = by 8 36 = by 36

9 = by 9

4 Size/Bits Depth

64 = 64K 4096 = 4 MEG

256 = 256K 8192 = 8 MEG

1024 = 1 MEG 16384 = 16

MEG

5 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)

6 Special Designation

P = Page Mode

N = Nibble Mode

K = Static Column Mode

W = Write Per Bit Mode

V = Video Ram

7 Separator

- = Commercial 00Cto+70

M = Military Equivalent Screened

(-550C to +1250C)

I = Industrial Temperature Tested

(-450Cto+85

0C)

X = Burned In

8 Speed (first two significant digits)

DRAMS SRAMS

60 = 60 nS 12 = 12 nS

70 = 70 nS 15 = 15 nS

80 = 80 nS 20 = 20 nS

130

0.200"

MAX

0.053

0.047

3.510

3.490

0.260

0.240

0.085

0.075

0.325

0.275

0.100

T.P.

0.100

TYP

0.505

0.495

0.100

T.P.

3.110

3.090

0.024

0.016

0.100

TYP

0.505

0.495

ACCUTEK MICROCIRCUIT CORPORATION

BUSINESS CENTER at NEWBURYPORT

2 NEW PASTURE ROAD, SUITE 1

NEWBURYPORT, MA 01950-4054

VOICE: 978-465-6200 FAX:9 78-462-3396

Email: sales@accutekmicro.com

Internet: www.accutekmicro.com

EXAMPLES:

AK581024ASP-60

1 Meg x 8, Dynamic RAM, Leadless SIM, Page Mode, Commercial,

60 nSEC Access Time

AK581024AGP-70

1 Meg x 8, Dynamic RAM, Leaded SIP, Page Mode Commercial,

70 nSEC AccessTime

Accutek reserves the right to make changes in specifications at any

time and without notice. Accutek does not assume any responsibil-

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

are implied. Preliminary data sheets contain minimum and maxi-

mum limits based upon design objectives, which are subject to

change upon full characterization over the specific operating condi-

tions.

MECHANICAL DIMENSIONS

Inches

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

available, but are shown as examples of the most widely used varia-

tions. Contact Accutek if other information is required.