1

White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

White Electronic Designs

October 2004

Rev. 2

PRELIMINARY*

W3DG7268V-AD1

512MB- 64Mx72 SDRAM UNBUFFERED

DESCRIPTION

The W3DG7268V is a 64Mx72 synchronous DRAM module

which consists of nine 64Mx8 SDRAM components in

TSOP II package, and one 2K EEPROM in an 8 pin TSSOP

package for Serial Presence Detect which are mounted on

a 144 Pin SO-DIMM multilayer FR4 Substrate.

* This product is under development, is not qualified or characterized and is subject to

change without notice.

FEATURES

PC100 and PC133 Compatible

Burst Mode Operation

Auto and Self Refresh capability

LVTTL compatible inputs and outputs

Serial Presence Detect with EEPROM

Fully synchronous: All signals are registered on the

positive edge of the system clock

Programmable Burst Lengths: 1, 2, 4, 8 or Full Page

3.3V ± 0.3V Power Supply

144 Pin SO-DIMM

• Package height option:

AD1: 27.94 (1.10")

PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)

PIN NAMES

A0 – A12

Address input (Multiplexed)

BA0-1

Select Bank

DQ0-63

Data Input/Output

CB0-7

Check bit (Data-in/data-out)

CLK0,CK1

Clock input

CKE0

Clock Enable input

CS0#

Chip select Input

RAS#

Row Address Strobe

CAS#

Column Address Strobe

WE#

Write Enable

DQMB0-7

DQM

Power Supply (3.3V)

Ground

SDA

Serial data I/O

SCL

Serial clock

DNU

Do not use

NC

No Connect

PIN FRONT PIN

BACK

PIN FRONT PIN

BACK

PIN FRONT PIN

BACK

49

DQ13

50

DQ45

97

DQ22

98

DQ54

3

DQ0

4

DQ32

51

DQ14

52

DQ46

99

DQ23

100

DQ55

5

DQ1

6

DQ33

53

DQ15

54

DQ47

101

102

7

DQ2

8

DQ34

55

56

103

A6

104

A7

9

DQ3

10

DQ35

57

CB0

58

CB4

105

A8

106

BA0

11

12

59

CB1

60

CB5

107

108

13

DQ4

14

DQ36

61

CLK0

62

CKE0

109

A9

110

BA1

15

DQ5

16

DQ37

63

64

111

A10

112

A11

17

DQ6

18

DQ38

65

RAS#

66

CAS#

113

114

19

DQ7

20

DQ39

67

WE#

68

NC

115 DQMB2 116 DQMB6

21

22

69

CS0#

70

A12

117 DQMB3 118 DQMB7

23 DQMB0 24

DQB4

71

NC

72

NC

119

120

25 DQMB1 26

DQB5

73

NC

74

CLK1

121

DQ24

122

DQ56

27

28

75

76

123

DQ25

124

DQ57

29

A0

30

A3

77

CB2

78

CB6

125

DQ26

126

DQ58

31

A1

32

A4

79

CB3

80

CB7

127

DQ27

128

DQ59

33

A2

34

A5

81

82

129

130

35

36

83

DQ16

84

DQ48

131

DQ28

132

DQ60

37

DQ8

38

DQ40

85

DQ17

86

DQ49

133

DQ29

134

DQ61

39

DQ9

40

DQ41

87

DQ18

88

DQ50

135

DQ30

136

DQ62

41

DQ10

42

DQ42

89

DQ19

90

DQ51

137

DQ31

138

DQ63

43

DQ11

44

DQ43

91

VSS

92

139

140

45

46

93

DQ20

94

DQ52

141

SDA

142

SCL

47

DQ12

48

DQ44

95

DQ21

96

DQ53

143

144