AK481024SN-12 [ACCUTEK]

DRAM;


型号：	AK481024SN-12
厂家：	ACCUTEK MICROCIRCUIT CORPORATION
描述：	DRAM 动态存储器
文件：	总2页 (文件大小：78K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Accutek

Microcircuit

Corporation

AK481024S / AK481024G

1,048,576 x 8 Bit CMOS

Dynamic Random Access Memory

DESCRIPTION

Front View

30-Pin SIM

The Accutek AK481024 high density memory module is a random

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

consists of eight standard 1 Meg x 1 DRAMs in plastic leaded chip

carriers (SOJ) mounted on the front side of a printed circuit board.

The module can be configured as a leadless 30 pad SIM or a leaded

30 pin SIP. This packaging approach provides a 6 to 1 density in-

crease over standard DIP packaging.

30-Pin SIP

The operation of the AK481024 is identical to eight 1 Meg x 1

DRAMs. The data input is tied to the data output and brought out

separately for each device, with common RAS, CAS and WE con-

trol. This common I/O feature dictates the use of early-write cycles

to prevent contention of D and Q. Since the Write-Enable (WE) sig-

nal must always go low before CAS in a write cycle, Read-Write and

Read-Modify-Write operation is not possible.

FEATURES

· Operating free air temperature 0⁰C to 70⁰C

· Upward compatible with AK584096 and AK5816384

· Downward compatible with AK48256

· 1,048,576 x 8 bit organization

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

Pin leaded SIP (Single In-Line Package)

· JEDEC standard pinout

· Each device has common D and Q lines with common RAS,

CAS and WE control

· CAS-before-RAS refresh

· Power

3.08 Watt Max Active (80 nSEC)

2.64 Watt Max Active (100 nSEC)

2.20 Watt Max Active (120 nSEC)

44 mW Max Standby

PIN NOMENCLATURE

PIN ASSIGNMENT

FUNCTIONAL DIAGRAM

PIN #

SYMBOL

Vcc

CAS

DQ1

PIN #

SYMBOL

DQ5

DQ₁- DQ₈

A₀- A₉

CAS

Data In / Data Out

Address Inputs

Column Address Strobe

Row Address Strobe

Write Enable

RAS

DQ6

Vss

DQ7

DQ2

Vcc

5v Supply

Vss

Ground

Vss

DQ3

No Connect

DQ8

RAS

MODULE OPTIONS

DQ4

Leadless SIM: AK481024S

Leaded SIP: AK481024G

Vcc

ORDERING INFORMATION

MECHANICAL DIMENSIONS

PART NUMBER CODING INTERPRETATION

Inches

Position

Product

= 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

0.100

TYP

Speed (first two significant digits)

SRAMS

DRAMS

50 nS

60 nS

70 nS

80 nS

8 nS

10 nS

12 nS

15 nS

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

available but are show as examples of the most widely used variations.

Contact Accutek if other information is required.

EXAMPLES:

AK481024SP-80

1 Meg x 8, 80 nSEC DRAM 30 pin SIM Configuration, Page Mode

AK481024GN-70

1 Meg x 8, 70 nSEC Dram 30 pin SIP Configuration, Nibble Mode

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

Email: accutek@seacoast.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 im-

plied. 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.

Internet: www.accutekmicro.com

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