AK591024AG [ACCUTEK]

1,048,576 Word X 9 bit, CMOS Dynamic Random Access Memory; 1,048,576字×9位， CMOS动态随机存取存储器


型号：	AK591024AG
厂家：	ACCUTEK MICROCIRCUIT CORPORATION
描述：	1,048,576 Word X 9 bit, CMOS Dynamic Random Access Memory 1,048,576字×9位， CMOS动态随机存取存储器存储
文件：	总2页 (文件大小：99K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Accutek

Microcircuit

Corporation

AK591024AS / AK591024AG

1,048,576 Word X 9 bit, CMOS

Dynamic Random Access Memory

DESCRIPTION

Front View

30-Pin SIM

The Accutek AK591024 high density memory modules is a random

access memory organized in 1 Meg x 9 bit words. The assembly

consists of two 1 Meg x 4 and one 1 Meg x 1 DRAMs in surface

mount packages 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 better than 6 to 1

density increase over standard DIP packaging.

30-Pin SIP

The operation of the AK591024 is identical to two 1 Meg x 4 plus one

1 Meg x 1 DRAMs. For the lower eight bits, the data input is tied to

data output and 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 conten-

tion 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

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

· Power:

· 1,048,576 x 9 bit organization

1.650 Watt Max Active (60 nS)

1.485 Watt Max Active (70 nS)

1.265 Watt Max Active (80 nS)

23.5 mWatt Standby (max)

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

SIP (Single In-Line Package)

· JEDEC standard pinout

· Operating free air temperature: 0^oto 70^oC

· Upward compatible with and AK594096 and AK5916384

· Downward compaitble with AK59256

· Common CAS, RAS and WE control for the lower eight bits

· 1024 refresh cycles/16ms

· Separate PCAS control for D₉and Q₉

· Functionally and Pin compatible with AK491024

PIN NOMENCLATURE

PIN ASSIGNMENT

FUNCTIONAL DIAGRAM

PIN #

SYMBOL

Vcc

CAS

DQ1

PIN #

SYMBOL

DQ5

DQ₁- DQ₈

D₉

Data In / Data Out

A₀- A₉

RAS

CAS

Data In

RAS

CAS

Q₉

Data Out

DQ1 +

DQ1

DQ2

DQ3

DQ4

DQ2

DQ3

DQ4

A₀- A₉

CAS, PCAS

RAS

Address Inputs

Column Address Strobe

Row Address Strobe

Write Enable

5v Supply

DQ6

DQ2

Vss

DQ7

A₀- A₉

RAS

CAS

DQ1

DQ2

DQ3

DQ4

Vss

DQ3

Vcc

DQ8

DQ5 +

DQ6

DQ7

DQ8

Vss

Ground

RAS

PCAS

No Connect

DQ4

A₀- A₉

RAS

CAS

MODULE OPTIONS

Vcc

PCAS

* WE

Leadless SIM: AK591024ASP

Leaded SIP: AK591024AGP

ORDERING INFORMATION

MECHANICAL DIMENSIONS

PART NUMBER CODING INTERPRETATION

Inches

Position

Product

= Accutek Memory

Type

= Dynamic RAM

= CMOS Dynamic RAM

= 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

256

64K

256K

4096

8192

4 MEG

8 MEG

16 MEG

1024 = 1 MEG 16384

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

50 nS

60 nS

70 nS

80 nS

8 nS

10 nS

12 nS

15 nS

0.100

TYP

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:

AK591024AGP-60

1 Meg x 9, 60 nSEC, DRAM, SIP Configuration, 30 Pin

AK591024ASP-70

1 Meg x 9, 70 nSEC, DRAM, SIM Configuration, 30 Pin

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

相关型号：