8, 16, 32 MEG x 64
NONBUFFERED DRAM DIMMs
SERIAL PRESENCE-DETECT MATRIX
BYTE
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15-61
62
63
DESCRIPTION
ENTRY (VERSION) BIT7
NUMBER OF BYTES USED BY MICRON
128
1
TOTAL NUMBER OF SPD MEMORY BYTES
256
0
MEMORY TYPE
EDO PAGE MODE
0
NUMBER OF ROW ADDRESSES
12
0
NUMBER OF COLUMN ADDRESSES
11 (64MB)
0
12 (128MB, 256MB)
0
NUMBER OF BANKS
DATA WIDTH
DATA WIDTH (continued)
VOLTAGE INTERFACE
RAS# ACCESS TIME (
t
RAC)
CAS# ACCESS TIME (
t
CAC)
MODULE CONFIGURATION TYPE
REFRESH RATES
DRAM WIDTH (PRIMARY DRAM)
ERROR CHECKING DRAM DATA WIDTH
RESERVED
SPD REVISION
CHECKSUM FOR BYTES 0-62
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
REV. 0
64MB -5
64MB -6
128MB -5
128MB -6
256MB -5
256MB -6
MICRON
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
–
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
–
64
65-71
72
MANUFACTURER’S JEDEC ID CODE
MANUFACTURER’S JEDEC CODE (CONT.)
MANUFACTURING LOCATION
73-90
91
MODULE PART NUMBER (ASCII)
PCB IDENTIFICATION CODE
92
93
94
95-98
99-125
IDENTIFICATION CODE (CONT.)
YEAR OF MANUFACTURE IN BCD
WEEK OF MANUFACTURE IN BCD
MODULE SERIAL NUMBER
MANUFACTURE SPECIFIC DATA (RSVD)
1
2
3
4
0
NOTE:
1. “1”/“0”: Serial Data, “driven to HIGH”/“driven to LOW.”
2. x = Variable Data.
8, 16, 32 Meg x 64 Nonbuffered DRAM DIMMs
DM78.p65 – Rev. 2/99
8
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©1999, Micron Technology, Inc.
MICRON [ MICRON TECHNOLOGY ]
