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8, 16, 32 Meg x 64 Nonbuffered DRAM DIMMs
DM78.p65 – Rev. 2/99
Micron Technology, Inc., reserves the right to change products or specifications without notice.
8, 16, 32 MEG x 64
NONBUFFERED DRAM DIMMs
KEY TIMING PARAMETERS
SPEED
-5
-6
t
RC
84ns
104ns
t
RAC
50ns
60ns
t
PC
20ns
25ns
t
AA
25ns
30ns
t
CAC
13ns
15ns
t
CAS
8ns
10ns
DRAM
MODULE
MT8LD864A X, MT16LD1664A X,
MT32LD3264A X
For the latest data sheet, please refer to the Micron Web
www.micronsemi.com/datasheets/datasheet.htmlPIN ASSIGNMENT (Front View )
168-Pin DIMM
(H-14; 64MB)
(H-17; 128MB)
(H-30; 256MB)
FEATURES
Eight-CAS# ECC pinout in a 168-pin, dual in-line
memory module (DIMM)
64MB (8 Meg x 64), 128MB (16 Meg x 64), and
256MB (32 Meg x 64)
Nonbuffered
High-performance CMOS silicon-gate process
Single +3.3V ±0.3V power supply
All inputs, outputs and clocks are LVTTL-
compatible
4,096-cycle CAS#-BEFORE-RAS# (CBR) refresh
distributed across 64ms
Extended Data-Out (EDO) PAGE MODE access cycle
Serial presence-detect (SPD)
OPTIONS
Package
168-pin DIMM (gold)
MARKING
G
Timing
50ns access
60ns access
-5
-6
Access Cycle
EDO PAGE MODE
X
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
** 256MB version only
SYMBOL
V
SS
DQ0
DQ1
DQ2
DQ3
V
DD
DQ4
DQ5
DQ6
DQ7
DQ8
V
SS
DQ9
DQ10
DQ11
DQ12
DQ13
V
DD
DQ14
DQ15
NC
NC
V
SS
NC
NC
V
DD
WE0#
CAS0#
CAS1#
RAS0#
OE0#
V
SS
A0
A2
A4
A6
A8
A10
NC (A12)
V
DD
V
DD
RFU
PIN
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
SYMBOL
V
SS
OE2#
RAS2#
CAS2#
CAS3#
WE2#
V
DD
NC
NC
NC
NC
V
SS
DQ16
DQ17
DQ18
DQ19
V
DD
DQ20
NC
RFU
NC
V
SS
DQ21
DQ22
DQ23
V
SS
DQ24
DQ25
DQ26
DQ27
V
DD
DQ28
DQ29
DQ30
DQ31
V
SS
NC
NC
NC
SDA
SCL
V
DD
PIN
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
NC/RAS1#**
156
115
RFU
116
V
SS
117
A1
118
A3
119
A5
120
A7
121
A9
122
A11
123
NC (A13)
124
V
DD
125
RFU
126
RFU
SYMBOL
V
SS
DQ32
DQ33
DQ34
DQ35
V
DD
DQ36
DQ37
DQ38
DQ39
DQ40
V
SS
DQ41
DQ42
DQ43
DQ44
DQ45
V
DD
DQ46
DQ47
NC
NC
V
SS
NC
NC
V
DD
RFU
CAS4#
CAS5#
PIN
127
128
129
NC/RAS3#**
130
CAS6#
131
CAS7#
132
133
134
135
136
137
138
139
DQ48
140
DQ49
141
DQ50
142
DQ51
143
144
DQ52
145
146
147
148
149
DQ53
150
DQ54
151
DQ55
152
153
DQ56
154
DQ57
155
DQ58
DQ59
157
158
DQ60
159
DQ61
160
DQ62
161
DQ63
162
163
164
165
166
167
168
SYMBOL
V
SS
RFU
RFU
V
DD
NC
NC
NC
NC
V
SS
V
DD
NC
RFU
NC
V
SS
V
SS
V
DD
V
SS
NC
NC
SA0
SA1
SA2
V
DD
PART NUMBERS
PART NUMBER
MT8LD864AG-5 X
MT8LD864AG-6 X
MT16LD1664AG-5 X
MT16LD1664AG-6 X
MT32LD3264AG-5 X*
MT32LD3264AG-6 X*
CONFIGURATION
8 Meg x 64
8 Meg x 64
16 Meg x 64
16 Meg x 64
32 Meg x 64
32 Meg x 64
SPEED
50ns
60ns
50ns
60ns
50ns
60ns
*Contact factory for availability
NOTE:
Pin symbols in parentheses are not used on these modules but
may be used for other modules in this product family. They are
for reference only.
Micron is a registered trademark of Micron Technology, Inc.