MT18VDDT3272 Micron, MT18VDDT3272 Datasheet - Page 23

• Manufacturer Part Number: MT18VDDT3272
• Description: 184-Pin Registered DDR SDRAM DIMMs (x72)
• Manufacturer: Micron

SERIAL PRESENCE-DETECT MATRIX
(Note: 1)
*Supports concurrent auto precharge. Contact factory for additional information regarding this option.
NOTE: 1. “1”/“0”: Serial Data, “driven to HIGH”/“driven to LOW.”
32, 64 Meg x 72 DDR SDRAM DIMMs
DD18C32_64X72AG_B.p65–Rev. B, Pub. 1/02
BYTE
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
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 = 2.5)
SDRAM ACCESS FROM CLOCK,
(CAS LATENCY = 2.5)
MODULE CONFIGURATION TYPE
REFRESH RATE/TYPE
SDRAM WIDTH (PRIMARY SDRAM)
ERROR-CHECKING SDRAM DATA WIDTH
MINIMUM CLOCK DELAY, BACK-TO-BACK
RANDOM COLUMN ACCESS
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 CYCLE TIME,
(CAS LATENCY = 2) (Note 2)
SDRAM CYCLE TIME,
(CAS LATENCY = 1)
SDRAM ACCESS FROM CK ,
(CAS LATENCY = 1)
MINIMUM ROW PRECHARGE TIME,
MINIMUM ROW ACTIVE TO ROW ACTIVE,
MINIMUM RAS# TO CAS# DELAY,
MINIMUM RAS# PULSE WIDTH,
MODULE BANK DENSITY
ADDRESS AND COMMAND SETUP TIME,
(Note 2)
DESCRIPTION
t
CK for -26A modules is set at 7.0ns. Component spec. value is 7.5ns.
t
t
t
t
CK
CK
CK
CK
t
AC
t
t
AC
RAS
t
RCD
t
RP
t
IS
t
RRD
15.6 or 7.81µs/SELF
Fast concurrent A/P
ENTRY (VERSION)
128MB or 256MB
0.75 (-26A/-265)
7.5 (-26A/-265)
1.0 (-26A/-265)
10 (-265/-202)
SDRAM DDR
7.5 (-26A)
SSTL 2.5V
7.5 (-265)
0.8 (-202)
1.1 (-202)
12 or 13
7 (-26A)
8 (-202)
8 (-202)
23
2, 4, 8
2, 2.5
ECC
128
256
10
72
20
15
20
40
2
0
8
8
1
4
0
1
–
–
Micron Technology, Inc., reserves the right to change products or specifications without notice.
184-pin DDR SDRAM DIMMs
MT18VDDT3272AG
256MB, 512MB (ECC x72)
00/C0*
0A
A0
A0
80
08
07
0C
02
48
00
04
70
75
80
75
80
02
80
08
08
01
0E
04
0C
01
02
20
75
75
80
00
00
50
3C
50
28
20
B0
MT18VDDT6472AG
©2002, Micron Technology, Inc.
00/C0
0D
0A
A0
A0
80
08
07
02
48
00
04
70
75
80
75
80
02
82
08
08
01
0E
04
0C
01
02
20
75
75
80
00
00
50
3C
50
28
40
B0