AK536256ZK-70 datasheet, PDF - EEWORLD Datasheet

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AK536256ZK-70: DescriptionDRAM; Categorystorage storage; File Size86KB，2 Pages; ManufacturerACCUTEK; Websitehttp://www.accutekmicro.com/

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AK536256ZK-70 Overview

DRAM

AK536256ZK-70 Parametric

Parameter Name	Attribute value
package instruction	,
Reach Compliance Code	compliant
Base Number Matches	1

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Accutek

Microcircuit

Corporation

DESCRIPTION

The Accutek AK536256W high density memory module is a CMOS

dynamic RAM organized in 256K x 36 bit words. The module con-

sists of eight standard 256K x 4 DRAMs in plastic SOJ packages

and four 256K x 1 DRAMs in PLCC packages. The assembly has

12 drams mounted on the front side of a printed circuit board in a 72

pad leadless SIM configuration.

The operation of the AK536256W is identical to eight 256K x 4 plus

four 256K x 1 DRAMs. There are four CAS lines and two RAS lines.

Independent byte control is accomplished by four CAS lines. Each

separate CAS line controls two 256K x 4 DRAMs, along with one

256K x 1 DRAM with data in tied to data out to form a 9 bit byte. The

bank of 36 bits is controlled by the two RAS lines. An eighteen bit

data path can be produced by connecting DQ

to DQ

, DQ

, etc. and alternately strobing RAS

and RAS

AK536256W

262,144 Word by 36 Bit CMOS

Dynamic Random Access Memory

FEATURES

262,144 x 36 bit organization

72 pad Single In-Line Module

Multiple CAS and RAS lines allow x18 or x36 bit widths

CAS-before-RAS refresh

Operating free air temperature 0

C to 70

Single 5 Volt Power Supply

Power

2.705 Watt Max Active (70nS)

2.375 Watt Max Active (80 nS)

2.045 Watt Max Active (100 nS)

66 mW Max Standby

512 Refresh Cycles, 8 mSEC

Available in Fast Page Mode and Static Column Mode ver-

sions

Upward compatible with AK536512W, AK5361024W,

AK5362048W, AK5364096W and AK5368192W

PIN NOMENCLATURE

- DQ

- A

CAS

- CAS

RAS

Vcc

Vss

Data In/Data Out

Address Inputs

Column Address Strobe

Row Address Strobe

Write Enable

Presence Detect

5v Supply

Ground

No Connect

PIN ASSIGNMENT

PIN #

SYMBOL

Vss

DQ0

DQ18

DQ1

DQ19

DQ2

DQ20

DQ3

DQ21

Vcc

PIN #

SYMBOL

DQ4

DQ22

DQ5

DQ23

DQ6

DQ24

DQ7

DQ25

Vcc

RAS2

DQ26

DQ8

PIN #

SYMBOL

DQ17

DQ35

Vss

CAS0

CAS2

CAS3

CAS1

RAS0

DQ9

DQ27

DQ10

DQ28

DQ11

DQ29

PIN #

SYMBOL

DQ12

DQ30

DQ13

DQ31

Vcc

DQ32

DQ14

DQ33

DQ15

DQ34

DQ16

PD1

PD2

PD3

PD4

Vss

MODULE OPTIONS

Leadless SIM: AK536256W

Leaded ZIP: AK536256Z

Presence Detect -

PD1

PD2

PD3

PD4

-60

Vss

-70

Vss

-80

Vss

AK536256ZK-70 Related Products

	AK536256ZK-70	AK536256ZP-80	AK536256ZP-10	AK536256ZP-70	AK536256ZK-80	AK536256ZK-10
Description	DRAM	DRAM	DRAM	DRAM	DRAM	DRAM
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant
Base Number Matches	1	1	1	1	1	1

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