MT18VDDF12872HY-40B Micron, MT18VDDF12872HY-40B Datasheet - Page 22

• Manufacturer Part Number: MT18VDDF12872HY-40B
• Description: 1GB DDR SDRAM SODIMM
• Manufacturer: Micron

Table 15: EEPROM Device Select Code
Most significant bit (b7) is sent first.
Table 16: EEPROM Operating Modes
pdf: 09005aef80e4880c, source: 09005aef80e487d7
DDAF18C128x72HG.fm - Rev. A 10/04 EN
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 OUT
SDA IN
SCL
t SU:STA
Figure 14: SPD EEPROM Timing Diagram
RW BIT
t F
1
0
1
1
0
0
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
b7
IL
IL
IL
IL
t HIGH
1
0
DEVICE TYPE IDENTIFIER
t HD:DAT
BYTES
22
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.
b5
1
1
1GB (x72, ECC, DR) PC3200
t SU:DAT
b4
0
0
200-PIN DDR SODIMM
SA2
SA2
b3
CHIP ENABLE
SA1
SA1
b2
t SU:STO
t BUF
©2004 Micron Technology, Inc.
SA0
SA0
b1
UNDEFINED
RW
RW
RW
b0