mt8lsdt1664ay-13e Micron Semiconductor Products, mt8lsdt1664ay-13e Datasheet - Page 20

• Manufacturer Part Number: mt8lsdt1664ay-13e
• Description: 128mb X64, Sr , 256mb X64, Dr 168-pin Sdram Udimm
• Manufacturer: Micron Semiconductor Products

Table 18: EEPROM Device Select Code
Most significant bit (b7) is sent first
Table 19: EEPROM Operating Modes
09005aef80bccbe7
SD8_16C16_32x64AG.fm - Rev. E 12/05 EN
SDA OUT
SELECT CODE
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
MODE
t SU:STA
RW BIT
Figure 10: 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
BYTES
b7
DEVICE TYPE IDENTIFIER
1
0
≤ 16
20
≥ 1
1
1
1
1
128MB (x64, SR), 256MB (x64, DR)
t DH
b6
0
1
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.
t SU:DAT
b5
1
1
168-PIN SDRAM UDIMM
b4
0
0
SA2
SA2
©2003, 2004 Micron Technology, Inc. All rights reserved.
b3
CHIP ENABLE
SA1
SA1
b2
t SU:STO
t BUF
SA0
SA0
b1
UNDEFINED
RW
RW
RW
b0