
8
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.
1999, Micron Technology, Inc.
8, 16, 32 MEG x 64
NONBUFFERED DRAM DIMMs
SERIAL PRESENCE-DETECT MATRIX
BYTE
0
1
2
3
4
DESCRIPTION
ENTRY (VERSION) BIT7
128
256
EDO PAGE MODE
12
11 (64MB)
12 (128MB, 256MB)
1 (64MB, 128MB)
2 (256MB)
x64
NONE
LVTTL
50ns (-5)
60ns (-6)
13ns (-5)
15ns (-6)
NONPARITY
15.625μs/NORMAL
x8 (64MB)
x4 (128MB, 256MB)
NONE
BIT6
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
x
0
0
0
0
0
x
x
x
–
BIT5
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
1
1
0
0
0
0
x
0
0
0
0
0
x
x
x
–
BIT4
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
1
0
0
0
0
1
1
1
1
0
0
1
0
0
0
0
x
0
0
0
0
0
x
x
x
–
BIT3
0
1
0
1
1
1
0
0
0
0
0
0
1
1
1
0
0
1
0
0
0
0
1
0
0
1
0
0
1
1
0
0
0
0
x
0
0
0
0
0
x
x
x
–
BIT2
0
0
0
1
0
1
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
1
0
1
1
0
1
1
0
0
0
1
x
0
0
0
1
0
x
x
x
–
BIT1
0
0
1
0
1
0
0
1
0
0
0
1
0
0
1
0
0
0
0
0
0
0
1
1
1
1
0
0
0
1
0
1
1
0
x
0
1
1
0
0
x
x
x
–
BIT0
0
0
0
0
1
0
1
0
0
0
1
0
0
1
1
0
0
0
0
0
0
0
0
0
1
1
0
0
0
1
1
0
1
0
x
1
0
1
0
0
x
x
x
–
HEX
80
08
02
0C
0B
0C
01
02
40
00
01
32
3C
0D
0F
00
00
08
10
00
00
00
2A
36
33
3F
34
40
2C
FF
01
02
03
04
xx
01
02
03
04
00
xx
xx
xx
–
NUMBER OF BYTES USED BY MICRON
TOTAL NUMBER OF SPD MEMORY BYTES
MEMORY TYPE
NUMBER OF ROW ADDRESSES
NUMBER OF COLUMN ADDRESSES
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
x
0
0
0
0
0
x
x
x
–
5
NUMBER OF BANKS
6
7
8
9
DATA WIDTH
DATA WIDTH (continued)
VOLTAGE INTERFACE
RAS# ACCESS TIME (
t
RAC)
10
CAS# ACCESS TIME (
t
CAC)
11
12
13
MODULE CONFIGURATION TYPE
REFRESH RATES
DRAM WIDTH (PRIMARY DRAM)
14
ERROR CHECKING DRAM DATA WIDTH
RESERVED
SPD REVISION
CHECKSUM FOR BYTES 0-62
15-61
62
63
REV. 0
64MB -5
64MB -6
128MB -5
128MB -6
256MB -5
256MB -6
MICRON
64
MANUFACTURER
’
S JEDEC ID CODE
MANUFACTURER
’
S JEDEC CODE (CONT.)
MANUFACTURING LOCATION
65-71
72
73-90
91
MODULE PART NUMBER (ASCII)
PCB IDENTIFICATION CODE
1
2
3
4
0
92
93
94
IDENTIFICATION CODE (CONT.)
YEAR OF MANUFACTURE IN BCD
WEEK OF MANUFACTURE IN BCD
MODULE SERIAL NUMBER
MANUFACTURE SPECIFIC DATA (RSVD)
95-98
99-125
NOTE:
1.
“
1
”
/
“
0
”
: Serial Data,
“
driven to HIGH
”
/
“
driven to LOW.
”
2. x = Variable Data.