MT18LSDT6472 Micron, MT18LSDT6472 Datasheet - Page 21

• Manufacturer Part Number: MT18LSDT6472
• Description: 168-Pin SDRAM DIMMs (x72) ECC
• Manufacturer: Micron

SERIAL PRESENCE-DETECT MATRIX
(Note: 1)
NOTE: 1. “1”/“0”: Serial Data, “driven to HIGH”/“driven to LOW.”
16, 32, 64 Meg x 72 PC133/PC100 Registered SDRAM DIMMs
SD18C16_32_64x72G_B.p65 – Pub. 11/01
BYTE
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
0
1
2
3
4
5
6
7
8
9
2. The value of
NUMBER OF BYTES USED BY MICRON
TOTAL NUMBER OF SPD MEMORY BYTES
MEMORY TYPE
NUMBER OF ROW ADDRESSES
NUMBER OF COLUMN ADDRESSES
NUMBER OF BANKS
MODULE DATA WIDTH
MODULE DATA WIDTH (continued)
MODULE VOLTAGE INTERFACE LEVELS
SDRAM CYCLE TIME,
(CAS LATENCY = 3)
SDRAM ACCESS FROM CLOCK,
(CAS LATENCY = 3)
MODULE CONFIGURATION TYPE
REFRESH RATE/TYPE
SDRAM WIDTH (PRIMARY SDRAM)
ERROR-CHECKING SDRAM DATA WIDTH
MIN. CLOCK DELAY FROM BACK-TO-BACK
RANDOM COLUMN ADDRESSES,
BURST LENGTHS SUPPORTED
NUMBER OF BANKS ON SDRAM DEVICE
CAS LATENCIES SUPPORTED
CS LATENCY
WE LATENCY
SDRAM MODULE ATTRIBUTES
SDRAM DEVICE ATTRIBUTES: GENERAL
SDRAM CYCLE TIME,
(CAS LATENCY = 2)
SDRAM ACCESS FROM CLK,
(CAS LATENCY = 2)
SDRAM CYCLE TIME,
(CAS LATENCY = 1)
SDRAM ACCESS FROM CLK,
(CAS LATENCY = 1)
MINIMUM ROW PRECHARGE TIME,
MINIMUM ROW ACTIVE TO ROW ACTIVE,
t
MINIMUM RAS# TO CAS# DELAY,
MINIMUM RAS# PULSE WIDTH,
(Note: 2)
RRD
DESCRIPTION
t
RAS used for the -13E module is calculated from
t
t
t
CK
CK
CK
t
t
AC
AC
t
AC
t
CCD
t
t
RAS
RCD
t
RP
ENTRY (VERSION) MT18LSDT1672G
7.8/15.6µs/SELF
1, 2, 4, 8, PAGE
5.4 (-13E/-133)
10 (-133/-10E)
20 (-133/-10E)
20 (-133/-10E)
6 (-133/-10E)
7.5 (-133)
7.5 (-13E)
5.4 (-13E)
45 (-13E)
44 (-133)
50 (-10E)
15 (-13E)
15 (-133)
20 (-10E)
15 (-13E)
14 (-13E)
12 or 13
10 or 11
7 (-13E)
8 (-10E)
6 (-10E)
SDRAM
LVTTL
-133
128
256
ECC
2, 3
72
0E
1
0
4
4
1
4
0
0
–
–
21
168-PIN REGISTERED SDRAM DIMM
128MB / 256MB / 512MB (x72, ECC)
t
RC -
0A
A0
2D
80
08
04
0C
01
48
00
01
70
75
80
54
60
02
80
04
04
01
8F
04
06
01
01
1F
0E
75
54
60
00
00
0F
14
0E
0F
14
0F
14
2C
32
t
RP. Actual device spec. value is 37ns.
Micron Technology, Inc., reserves the right to change products or specifications without notice.
MT18LSDT3272G MT18LSDT6472G
A0
2D
80
08
04
0C
0B
01
48
00
01
70
75
80
54
60
02
80
04
04
01
8F
04
06
01
01
1F
0E
75
54
60
00
00
0F
14
0E
0F
14
0F
14
2C
32
©2001, Micron Technology, Inc.
80
08
04
0D
0B
01
48
00
01
70
75
80
54
60
02
82
04
04
01
8F
04
06
01
01
1F
0E
75
A0
54
60
00
00
0F
14
0E
0F
14
0F
14
2D
2C
32