MT18LD472 Micron Semiconductor Products, Inc., MT18LD472 Datasheet
MT18LD472
Manufacturer Part Number
MT18LD472
Description
168-Pin DRAM Dimms, Nonbuffered, (x72), , Status: End of Life (EOL)
Manufacturer
Micron Semiconductor Products, Inc.
Datasheet
1.MT18LD472.pdf
(30 pages)
OBSOLETE
DRAM
MODULE
FEATURES
• JEDEC-standard, eight-CAS#, ECC pinout in a 168-pin,
• 16MB (2 Meg x 72) and 32MB (4 Meg x 72)
• Nonbuffered
• High-performance CMOS silicon-gate process
• Single +3.3V 0.3V power supply
• All inputs, outputs and clocks are TTL-compatible
• Refresh modes: RAS#-ONLY, CAS#-BEFORE-RAS#
• 2,048-cycle refresh distributed across 32ms
• FAST-PAGE-MODE (FPM) or Extended Data-Out
• Serial presence-detect (SPD)
OPTIONS
• Package
• Timing
• Access Cycles
*EDO version only
KEY TIMING PARAMETERS
EDO Operating Mode
FPM Operating Mode
NOTE: Pin symbols in parentheses are not used on these modules but may be used
2, 4 Meg x 72 Nonbuffered DRAM DIMMs
DM60.p65 – Rev. 6/98
SPEED
SPEED
dual in-line memory module (DIMM)
(CBR) and HIDDEN
(EDO) PAGE MODE access cycles
168-pin DIMM (gold)
50ns access
60ns access
FAST PAGE MODE
EDO PAGE MODE
-5
-6
-6
for other modules in this product family. They are for reference only.
104ns
110ns
84ns
t
t
RC
RC
50ns
60ns
60ns
t
t
RAC
RAC
20ns
25ns
35ns
t
t
PC
PC
25ns
30ns
30ns
t
t
AA
AA
MARKING
13ns
15ns
15ns
t
t
CAC
CAC
None
G
-5*
-6
X
10ns
40ns
t
8ns
CAS
t
RP
1
MT9LD272A(X), MT18LD472A(X)
For the latest data sheet revisions, please refer to the Micron
Web site: www.micron.com/mti/msp/html/datasheet.html
PIN
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
1
2
3
4
5
6
7
8
9
NC (A12)
SYMBOL
NONBUFFERED DRAM DIMMs
PIN ASSIGNMENT (Front View)
CAS0#
CAS1#
RAS0#
WE0#
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
OE0#
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
RFU
CB0
CB1
A10
V
V
V
V
V
V
V
V
V
NC
NC
A0
A2
A4
A6
A8
Micron Technology, Inc., reserves the right to change products or specifications without notice.
DD
DD
DD
DD
DD
SS
SS
SS
SS
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
168-Pin DIMM
SYMBOL
RAS2#
CAS2#
CAS3#
WE2#
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
OE2#
SDA
CB2
CB3
RFU
SCL
V
V
V
V
V
V
V
V
V
NC
NC
NC
NC
NC
NC
NC
DD
DD
DD
DD
SS
SS
SS
SS
SS
102
103
107
108
109
111
116
PIN
100
101
104
105
106
110
112
113
114
115
117
118
119
120
121
122
123
124
125
126
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
SYMBOL
NC (A11)
NC (A13)
2, 4 MEG x 72
CAS4#
CAS5#
DQ32
DQ33
DQ34
DQ35
DQ36
DQ37
DQ38
DQ39
DQ40
DQ41
DQ42
DQ43
DQ44
DQ45
DQ46
DQ47
RFU
RFU
RFU
RFU
CB4
CB5
V
V
V
V
V
V
V
V
NC
NC
NC
A1
A3
A5
A7
A9
SS
DD
SS
DD
SS
DD
SS
DD
1998, Micron Technology, Inc.
PIN
127
128
129 NC/RAS3#*
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
SYMBOL
CAS6#
CAS7#
DQ48
DQ49
DQ50
DQ51
DQ52
DQ53
DQ54
DQ55
DQ56
DQ57
DQ58
DQ59
DQ60
DQ61
DQ62
DQ63
RFU
RFU
CB6
CB7
RFU
SA0
SA1
SA2
V
V
V
V
V
V
V
V
V
NC
NC
NC
NC
NC
NC
DD
DD
DD
DD
SS
SS
SS
SS
SS
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