MT18VDDT12872Y-265D2 Micron Technology Inc, MT18VDDT12872Y-265D2 Datasheet - Page 31
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MT18VDDT12872Y-265D2
Manufacturer Part Number
MT18VDDT12872Y-265D2
Description
MODULE SDRAM DDR 1GB 184DIMM
Manufacturer
Micron Technology Inc
Datasheet
1.MT18VDDT12872Y-265D2.pdf
(39 pages)
Specifications of MT18VDDT12872Y-265D2
Memory Type
DDR SDRAM
Memory Size
1GB
Speed
266MT/s
Package / Case
184-DIMM
Main Category
DRAM Module
Sub-category
DDR SDRAM
Module Type
184RDIMM
Device Core Size
72b
Organization
128Mx72
Total Density
1GByte
Chip Density
512Mb
Access Time (max)
750ps
Maximum Clock Rate
266MHz
Operating Supply Voltage (typ)
2.5V
Operating Current
2.61A
Number Of Elements
18
Operating Supply Voltage (max)
2.7V
Operating Supply Voltage (min)
2.3V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Pin Count
184
Mounting
Socket
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Table 19: EEPROM Device Select Code
The most significant bit (b7) is sent first
Table 20: EEPROM Operating Modes
pdf: 09005aef808a331f, source: 09005aef80858037
DD18C32_64_128_256x72G.fm - Rev. E 9/04 EN
SDA OUT
SELECT CODE
MODE
Memory Area Select Code (two arrays)
Protection Register Select Code
Current Address Read
Random Address Read
Sequential Read
Byte Write
Page Write
SDA IN
SCL
t SU:STA
Figure 16: SPD EEPROM Timing Diagram
RW BIT
1
0
1
1
0
0
t F
t HD:STA
t LOW
t AA
V
V
V
V
IH
IH
IH
IH
WC
V
V
or V
or V
or V
or V
IL
IL
256MB, 512MB, 1GB, 2GB (x72, ECC, SR)
b7
IL
IL
IL
IL
t HIGH
1
0
DEVICE TYPE IDENTIFIER
t HD:DAT
BYTES
31
1
1
1
1
16
1
b6
0
1
t DH
INITIAL SEQUENCE
START, Device Select, RW = ‘1’
START, Device Select, RW = ‘0’, Address
reSTART, Device Select, RW = ‘1’
Similar to Current or Random Address Read
START, Device Select, RW = ‘0’
START, Device Select, RW = ‘0’
t R
Micron Technology, Inc., reserves the right to change products or specifications without notice.
184-PIN DDR SDRAM RDIMM
b5
1
1
t SU:DAT
b4
0
0
SA2
SA2
b3
CHIP ENABLE
©2004 Micron Technology, Inc. All rights reserved.
SA1
SA1
b2
t SU:STO
t BUF
SA0
SA0
b1
UNDEFINED
RW
RW
RW
b0