AK591024 [ACCUTEK]

4,194,304 Word x 9 Bit CMOS Dynamic Random Access Memory; 4,194,304字×9位CMOS动态随机存取存储器


型号：	AK591024
厂家：	ACCUTEK MICROCIRCUIT CORPORATION
描述：	4,194,304 Word x 9 Bit CMOS Dynamic Random Access Memory 4,194,304字×9位CMOS动态随机存取存储器存储
文件：	总2页 (文件大小：87K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Accutek

Microcircuit

Corporation

AK594096AS / AK594096AG

4,194,304 Word x 9 Bit CMOS

Dynamic Random Access Memory

DESCRIPTION

Front View

30-Pin SIM

The Accutek AK594096A high density memory module is a CMOS

random access memory organized in 4 Meg x 9 bit words. The as-

sembly consists of nine standard 4 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. The module is only 0.800 inches high (same

height as a standard 1 Meg module), making it ideally suited for ap-

plications with low height restrictions.

30-Pin SIP

The operation of the AK594096A is identical to nine 4 Meg x 1

DRAMs. For the lower eight bits data input is tied to the data output

and brought out separately for each device, with common RAS,

CAS control. This common I/O feature dictates the use of

early-write cycles to prevent contention of D and Q. Since the

Write-Enable (WE) signal must always go low before CAS in a write

cycle, Read-Write and Read-Modify-Write operation is not possible.

For the ninth bit, the data input (D₉) and the data output (Q₉) pins are

brought out separately and controlled by a separate PCAS for that

bit. Bit nine is generally used for parity.

FEATURES

· 4,194,304 x 9 bit organization

· Power

4.45 Watt Max Active (80 nSEC)

3.96 Watt Max Active (100 nSEC)

49.5 mW Max Standby

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

Pin leaded SIP (Single In-Line Package)

· JEDEC standard pinout

· Operating free air temperature 0⁰C to 70⁰C

· Common CAS and RAS control for the lower eight bits

· Separate PCAS for control for D₉and Q₉

· CAS-before-RAS refresh

· Upward compatible with AK5916384

· Downward compatible with AK591024, AK59256

PIN NOMENCLATURE

PIN ASSIGNMENT

FUNCTIONAL DIAGRAM

PIN #

SYMBOL

Vcc

CAS

DQ1

PIN #

SYMBOL

DQ5

DQ₁- DQ₈

D₉

Data In / Data Out

Data In 9

Q₉

Data Out 9

A10

DQ6

A₀- A₁₀

CAS, PCAS

RAS

Address Inputs

Column Address Strobe

Row Address Strobe

Write Enable

5v Supply

DQ2

Vss

DQ7

Vss

DQ3

Vcc

DQ8

Vss

Ground

RAS

PCAS

No Connect

DQ4

MODULE OPTIONS

Vcc

Leadless SIM: AK594096AS

Leaded SIP: AK594096AG

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:

AK594096ASP-80

4 Meg x 9, 80 nSEC DRAM 30 pin SIM Configuration, Page Mode

AK594096AGP-70

4 Meg x 9, 70 nSEC Dram 30 pin SIP Configuration, Page 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

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.

Email: sales@accutekmicro.com

Internet: www.accutekmicro.com

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