MT18VDDT12872PHG-265 Micron, MT18VDDT12872PHG-265 Datasheet - Page 24

• Manufacturer Part Number: MT18VDDT12872PHG-265
• Description: 1GB DDR SDRAM SODIMM
• Manufacturer: Micron

Table 16: EEPROM Device Select Code
Most significant bit (b7) is sent first
Table 17: EEPROM Operating Modes
pdf: 09005aef81697898/source: 09005aef8169786e
DD18C128x72PHG.fm - Rev. A 10/04 EN
SELECT CODE
MODE
SDA OUT
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
RW BIT
Figure 15: SPD EEPROM Timing Diagram
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
IL
IL
IL
IL
t HIGH
t HD:DAT
DEVICE TYPE IDENTIFIER
b7
BYTES
1
0
24
1
1
1
1
16
1
t DH
b6
0
1
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’
200-PIN DDR SDRAM SODIMM
INITIAL SEQUENCE
t R
Micron Technology, Inc., reserves the right to change products or specifications without notice.
b5
t SU:DAT
1
1
b4
0
0
1GB (x72, ECC, PLL)
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