AK536512W datasheet, PDF - EEWORLD Datasheet

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AK536512W: Description1,048,576 Word by 36 Bit CMOS Dynamic Random Access Memory; File Size88KB，2 Pages; ManufacturerACCUTEK; Websitehttp://www.accutekmicro.com/

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1,048,576 Word by 36 Bit CMOS Dynamic Random Access Memory

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Accutek

Microcircuit

Corporation

DESCRIPTION

The Accutek AK5361024W high density memory module is a

CMOS Dynamic RAM organized in 1024K x 36 bit words. The mod-

ule consists of eight standard 1 Meg x 4 DRAMsin plastic SOJ pack-

ages mounted on the front side of a printed circuit board and four 1

Meg x 1 DRAMs in plastic SOJ packages mounted on the back side

of a printed circuit board with a low profile height of only 0.875 inch

in a 72 pin leadless SIM configuration.

This configuration allows socket-mounting of large quantities of

memory in applications where high density and ease of inserting ad-

ditional memory are important.

The operation of the AK5361024W is identical to eight 1 Meg x 4

plus four 1 Meg 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 1Meg x 4 DRAMs, along with a

1 Meg 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

0

to DQ

18

, DQ

1

to

DQ

19

, etc. and alternately strobing

RAS

0

with

RAS

2

.

+

AK5361024W

1,048,576 Word by 36 Bit CMOS

Dynamic Random Access Memory

+

FEATURES

·

1,048,576 x 36 bit organization

Low profile board height of 0.875 inch

72 pad Single In-Line Module

Multiple

CAS

and

RAS

lines allow x18 or x36 bit widths

CAS-before-RAS, RAS-only

or hidden refresh

Power

7.26 Watt Max Active (60nS)

6.16 Watt Max Active (70 nS)

5.28 Watt Max Active (80 nS)

66 mW Max Standby

·

Single 5 Volt Power Supply

·

1024 Refresh Cycles, 16 mSEC

·

Available in Fast Page Mode and Static Column Mode ver-

sions

·

Available in leadless SIM or leaded ZIP versions

·

Downward compatible with AK536512W and AK536256W

·

Upward compatible with AK5362048W, AK5364096W and

AK5368192W

·

Operating free air temperature 0

0

C to 70

0

C

PIN NOMENCLATURE

DQ

0

- DQ

35

A

0

- A

9

CAS

0

- CAS

3

RAS

0

& RAS

2

WE

PD

1

- PD

4

Vcc

Vss

NC

Data In/Data Out

Address Inputs

Column Address Strobe

Row Address Strobe

Write Enable

Presence Detect

5v Supply

Ground

No Connect

PIN ASSIGNMENT

Pin #

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Symbol

Vss

DQ0

DQ18

DQ1

DQ19

DQ2

DQ20

DQ3

DQ21

Vcc

NC

A0

A1

A2

A3

A4

A5

A6

Pin #

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

Symbol

NC

DQ4

DQ22

DQ5

DQ23

DQ6

DQ24

DQ7

DQ25

A7

NC

Vcc

A8

A9

NC

RAS2

DQ26

DQ8

Pin #

37

38

39

40

41

42

43

44

45

46

47

48

46

50

51

52

53

54

Symbol

DQ17

DQ35

Vss

CAS0

CAS2

CAS3

CAS1

RAS0

NC

WE

NC

DQ9

DQ27

DQ10

DQ28

DQ11

DQ29

Pin #

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

Symbol

DQ12

DQ30

DQ13

DQ31

Vcc

DQ32

DQ14

DQ33

DQ15

DQ34

DQ16

NC

PD1

PD2

PD3

PD4

NC

Vss

MODULE OPTIONS

Leadless SIM: AK5361024W

Presence Detect

PD1

PD2

PD3

PD4

-60

Vss

NC

-70

Vss

NC

-80

Vss

NC

Vss

AK536512W Related Products

	AK536512W	AK5362048W	AK5368192W
Description	1,048,576 Word by 36 Bit CMOS Dynamic Random Access Memory	1,048,576 Word by 36 Bit CMOS Dynamic Random Access Memory	1,048,576 Word by 36 Bit CMOS Dynamic Random Access Memory

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