W3DG72128V-D2

1

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

White Electronic Designs

August 2004

Rev. 1

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

PRELIMINARY*

1GB- 128Mx72 SDRAM, REGISTER and SPD, w/PLL

DESCRIPTION

The W3DG72128V is a 128Mx72 synchronous DRAM

module which consists of eighteen 128Mx4 stack SDRAM

components in TSOP II package, two 18 bit Drive ICs for

input control signal and one 2Kb EEPROM in an 8 pin

TSSOP package for Serial Presence Detect which are

mounted on a 168 pin DIMM multilayer FR4 Substrate.

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

change without notice.

FEATURES

Clock speed of 100MHz and 133MHz

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

168 Pin DIMM JEDEC

Pin ConfigurATIONs (FRONT SIDE/BACK SIDE)

PIN NAMES

Pin

Front

Pin

Front

Pin

Front

Pin

Back

Pin

Back

Pin

Back

29

DQM1

57

DQ18

85

113

DQM5

141

DQ50

2

DQ0

30

CS0#

58

DQ19

86

DQ32

114

*CS1#

142

DQ51

3DQ1

31

DNU

59

87

DQ33

115

RAS#

143

4DQ2

32

60

DQ20

88

DQ34

116

144

DQ52

5

DQ3

33

A0

61

NC

89

DQ35

117

A1

145

NC

34

A2

62

*VREF

90

118

A3

146

7

DQ4

35

A4

63

*CKE1

91

DQ36

119

A5

147

REGE

8

DQ5

36

A6

64

92

DQ37

120

A7

148

9

DQ6

37

A8

65

DQ21

93

DQ38

121

A9

149

DQ53

10

DQ7

38

A10/AP

66

DQ22

94

DQ39

122

BA0

150

DQ54

11

DQ8

39

BA1

67

DQ23

95

DQ40

123

A11

151

DQ55

12

40

68

96

124

152

13

DQ9

41

69

DQ24

97

DQ41

125

*CLK1

153

DQ56

14

DQ10

42

CLK0

70

DQ25

98

DQ42

126

*A12

154

DQ57

15

DQ11

43

71

DQ26

99

DQ43

127

155

DQ58

16

DQ12

44

DNU

72

DQ27

100

DQ44

128

CKE0

156

DQ59

17

DQ13

45

CS2#

73

101

DQ45

129

*CS3#

157

18

46

DQM2

74

DQ28

102

130

DQM6

158

DQ60

19

DQ14

47

DQM3

75

DQ29

103

DQ46

131

DQM7

159

DQ61

20

DQ15

48

DNU

76

DQ30

104

DQ47

132

*A13

160

DQ62

21

CB0

49

77

DQ31

105

CB4

133

161

DQ63

22

CB1

50

NC

78

106

CB5

134

NC

162

23

51

NC

79

CLK2

107

135

NC

163

*CLK3

24

NC

52

CB2

80

NC

108

NC

136

CB6

164

NC

25

NC

53

CB3

81

NC

109

NC

137

CB7

165

**SA0

26

54

82

**SDA

110

138

166

**SA1

27

WE#

55

DQ16

83

**SCL

111

CAS#

139

DQ48

167

**SA2

28

DQM0

56

DQ17

84

112

DQM4

140

DQ49

168

* These pins are not used in this module.

** These pins should be NC in the system which

does not support SPD.

A0 – A12

Address input (Multiplexed)

BA0-1

Select Bank

DQ0-63

Data Input/Output

CB0-7

Check bit (Data-in/data-out)

CLK0

Clock input

CKE0

Clock Enable input

CS0#,CS2#

Chip select Input

RAS#

Row Address Strobe

CAS#

Column Address Strobe

WE#

Write Enable

DQM0-7

DQM

Power Supply (3.3V)

Ground

Power supply for reference

REGE

Register Enable

SDA

Serial data I/O

SCL

Serial clock

SA0-2

Address in EEPROM

DNU

Do not use

NC

No Connect