AK5362048W datasheet(1/2 Pages) ACCUTEK

Part #	AK5362048W

Description	524,288 Word by 36 Bit CMOS Dynamic Random Access Memory

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Manufacturer	ACCUTEK [ACCUTEK MICROCIRCUIT CORPORATION]

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DESCRIPTION

The Accutek AK536512W high density memory module is a CMOS

dynamic RAM organized in 512K x 36 bit words. The module con-

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

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

12 drams mounted on each side of a printed circuit board in a 72 pad

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 AK536512 is identical to sixteen 256K x 4 plus

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

lines. On each bank of 256K x 36, independent byte control is ac-

complished by four CAS lines. Each separate CAS line controls

four 256K x 4 DRAMs and two 256K x 1 DRAMs with data in tied to

data out to form a 9 bit byte. Two banks of 36 bits are controlled by

the two pairs of RAS lines. An eighteen bit data path can be pro-

duced by connecting DQ0 to DQ18,DQ1 to DQ19, etc. and alter-

nately strobing RAS0 with RAS1 and RAS2 with RAS3.

FEATURES

· 524,288 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

oCto70oC

· Single 5 Volt Power Supply

· Power

5.41 Watt Max Active (70nS)

4.75 Watt Max Active (80 nS)

4.09 Watt Max Active (100 nS)

132 mW Max Standby

· 512 Refresh Cycles, 8 mSEC

· Available in Fast Page Mode and Static Column Mode ver-

sions

· Downward compatible with AK536256W

· Upward compatible with AK5361024W, AK5362048W,

AK5364096W and AK5368192W

Accutek

Microcircuit

Corporation

AK536512W

524,288 Word by 36 Bit CMOS

Dynamic Random Access Memory

+

PIN NOMENCLATURE

DQ0 -DQ35

Data In/Data Out

A0 -A8

Address Inputs

CAS0 - CAS3

Column Address Strobe

RAS0 - RAS3

Row Address Strobe

WE

Write Enable

PD

Presence Detect

Vcc

5v Supply

Vss

Ground

NC

No Connect

MODULE OPTIONS

Leadless SIM: AK536512W

Leaded ZIP: AK536512Z

PIN ASSIGNMENT

PIN #

SYMBOL

PIN #

SYMBOL

PIN #

SYMBOL

PIN #

SYMBOL

1

Vss

19

NC

37

DQ17

55

DQ12

2

DQ0

20

DQ4

38

DQ35

56

DQ30

3

DQ18

21

DQ22

39

Vss

57

DQ13

4

DQ1

22

DQ5

40

CAS0

58

DQ31

5

DQ19

23

DQ23

41

CAS2

59

Vcc

6

DQ2

24

DQ6

42

CAS3

60

DQ32

7

DQ20

25

DQ24

43

CAS1

61

DQ14

8

DQ3

26

DQ7

44

RAS0

62

DQ33

9

DQ21

27

DQ25

45

RAS1

63

DQ15

10

Vcc

28

A7

46

NC

64

DQ34

11

NC

29

NC

47

WE

65

DQ16

12

A0

30

Vcc

48

NC

66

NC

13

A1

31

A8

49

DQ9

67

PD1

14

A2

32

NC

50

DQ27

68

PD2

15

A3

33

RAS3

51

DQ10

69

PD3

16

A4

34

RAS2

52

DQ28

70

PD4

17

A5

35

DQ26

53

DQ11

71

NC

18

A6

36

DQ8

54

DQ29

72

Vss

Presence Detect -

-60

-70

-80

PD1

NC

PD2

Vss

PD3

NC

Vss

NC

PD4

NC

Vss

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AK5362048W Datasheet(PDF) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION

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