DDR2 SDRAM FBDIMM
MT18HTF12872FD – 1GB
MT18HTF25672FD – 2GB
Features
•
240-pin, DDR2 fully buffered dual in-line memory
module (FBDIMM)
•
Fast data transfer rates: PC2-4200, PC2-5300, or
PC2-6400
•
1GB (128 Meg x 72), 2GB (256 Meg x 72)
•
3.2 Gb/s, 4 Gb/s, or 4.8 Gb/s link transfer rates
•
High-speed, 1.5V differential, point-to-point link be-
tween the host controller and advanced memory
buffer (AMB)
•
Fault-tolerant; can work around a bad bit lane in
each direction
•
High-density scaling with up to eight FBDIMM devi-
cess per channel
•
SMBus interface to AMB for configuration register
access
•
In-band and out-of-band command access
•
Deterministic protocol
–
Enables memory controller to optimize DRAM ac-
cesses for maximum performance
–
Delivers precise control and repeatable memory
behavior
•
Automatic DDR2 SDRAM bus and channel calibra-
tion
•
Transmitter de-emphasis to reduce ISI
•
MBIST and IBIST test functions
•
Transparent mode for DRAM test support
•
V
DD
= V
DDQ
= 1.8V for DRAM
•
V
REF
= 0.9V SDRAM command/address termination
•
V
CC
= 1.5V for AMB
•
V
DDSPD
= 3–3.6V for AMB and EEPROM
•
Serial presence-detect (SPD) with EEPROM
•
Gold edge contacts
•
Dual rank
•
Supports 95°C operation with 2X refresh
Figure 1: 240-Pin FBDIMM (MO-256 R/C B)
Module height: 30.35mm (1.19in)
Options Marking
•
Package
–
240-pin DIMM (Pb-free) Y
•
Frequency/CAS latency
–
2.5ns @ CL = 5 (DDR2-800) -80E
–
3.0ns @ CL = 5 (DDR2-667) -667
–
3.75ns @ CL = 4 (DDR2-533)
1
-53E
Note:
1. Not recommended for new designs.
1GB, 2GB (x72, DR) 240-Pin DDR2 SDRAM FBDIMM
Features
PDF: 09005aef81a2f237
htf18c128_256x72fdy.pdf - Rev. D 12/09 EN
1
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© 2005 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.