mt18htf25672fy-667 Micron Semiconductor Products, mt18htf25672fy-667 Datasheet - Page 4

• Manufacturer Part Number: mt18htf25672fy-667
• Description: 1gb, 2gb X72, Sr 240-pin Ddr2 Sdram Fbdimm
• Manufacturer: Micron Semiconductor Products

Table 6:
pdf: 09005aef81a2f214/source: 09005aef81a2f22d
HTF18C64_128_256x72F.fm - Rev. B 9/07 EN
PN0#–PN13#
SN0#–SN13#
PS0#–PS9#
SS0#–SS9#
PN0–PN13
SN0–SN13
SA0–SA2
Symbol
PS0–PS9
SS0–SS9
M_TEST
RESET#
V
SCK#
DNU
SDA
DDSPD
SCK
V
SCL
V
V
V
NC
DD
CC
TT
SS
Pin Descriptions
Output
Output
Output
Output
Supply
Supply
Supply
Supply
Supply
Supply
Input
Input
Input
Input
Input
Input
Input
Type
I/O
I/O
–
–
–
Description
Primary southbound data, positive lines.
Primary southbound data, negative lines.
Serial presence-detect (SPD) clock input.
System clock input, positive line.
System clock Input, negative line.
Secondary southbound data, positive lines.
Secondary southbound data, negative lines.
Primary northbound data, positive lines.
Primary northbound data, negative lines.
Secondary northbound data, positive lines.
Secondary northbound data, negative lines.
SPD address inputs; also used to select the FBDIMM number in the AMB.
SPD data input/output.
AMB reset signal.
AMB core power and AMB channel interface power (1.5V).
DRAM power and AMB DRAM I/O power (1.8V).
SPD/AMB SMBus power (3.3V).
Ground.
DRAM address/command/clock termination power (V
The M_TEST pin provides an external connection for testing the margin of V
produced by a voltage divider on the module. It is not intended to be used in normal system
operation and must not be connected (DNU) in a system. This test pin may have other
features on future card designs and will be included in this specification at that time.
Do not use.
No connect: These pins are not connected on the module.
1GB, 2GB (x72, SR) 240-Pin DDR2 SDRAM FBDIMM
4
Micron Technology, Inc., reserves the right to change products or specifications without notice.
Pin Assignments and Descriptions
DD
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©2005 Micron Technology, Inc. All rights reserved.
REF
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