MT18RTF25672FDY Micron Semiconductor Products, MT18RTF25672FDY Datasheet

MT18RTF25672FDY

Manufacturer Part Number

MT18RTF25672FDY

Description

1.55v Ddr2 Sdram Fbdimm

Manufacturer

Micron Semiconductor Products

Datasheet

1.MT18RTF25672FDY.pdf (8 pages)

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1.55V DDR2 SDRAM FBDIMM

MT18RTF25672FDY – 2GB

Features

• 240-pin, fully buffered DIMM (FBDIMM)

• Very low-power DDR2 operation

• 1.5V ≤ V

• V

• Backward compatible with systems designed for the

• Dual rank

• Component configuration: 256 Meg x 8

Functionality

This 1.55V FBDIMM consumes less power than a stand-

ard 1.8V FBDIMM. However, it has the same timing

and operating parameters as a standard FBDIMM.

This enables backward compatibility with systems de-

signed for use with standard FBDIMMs.

Table 1: Key Timing Parameters

Table 2: Addressing

PDF: 09005aef82b63cf2

rtf18c256x72fdy.pdf - Rev. C 12/09 EN

Parameter

Refresh count

Device bank address

Device page size per bank

Device configuration

Row address

Column address

Module rank address

(AMB) DRAM I/O

standard (1.8V) FBDIMM

Speed

Grade

-667

-53E

= 1.55V

≤ 1.9V for DDR2 SDRAM

≤ 1.9V for advanced memory buffer

Products and specifications discussed herein are subject to change by Micron without notice.

Nomenclature

Industry

PC2-5300

PC2-4200

CL = 5

667

–

Data Rate (MT/s)

2GB (x72, DR) 240-Pin DDR2 SDRAM FBDIMM

CL = 4

553

Information in the 1.8V DDR2 FBDIMM data sheet is

directly applicable to this 1.55V DDR2 FBDIMM, ex-

cept where stated otherwise in this data sheet.

Figure 1: 240-Pin FBDIMM (MO-256 R/C B)

Module height: 30.35mm (1.19in)

Options

• Package

• Frequency/CL

– 240-pin DIMM (lead-free)

– 3.0ns @ CL = 5 (DDR2-667)

Note:

Micron Technology, Inc. reserves the right to change products or specifications without notice.

CL = 3

400

1. CL = CAS (READ) latency.

1Gb (256 Meg x 8)

16K A[13:0]

(ns)

RCD

8 BA[2:0]

1K A[9:0]

2 S#[1:0]

2GB

1KB

(ns)

Marking

Features

-667

(ns)

Related parts for MT18RTF25672FDY

MT18RTF25672FDY Summary of contents

Page 1

... DDR2 SDRAM FBDIMM MT18RTF25672FDY – 2GB Features • 240-pin, fully buffered DIMM (FBDIMM) • Very low-power DDR2 operation • 1.5V ≤ V ≤ 1.9V for DDR2 SDRAM DD • 1.5V ≤ V ≤ 1.9V for advanced memory buffer DD (AMB) DRAM I/O • 1.55V DD • Backward compatible with systems designed for the standard (1.8V) FBDIMM • ...

Page 2

... Data sheets for the base devices can be found on Micron’s Web site. Notes: 2. All part numbers end with a four-place code (not shown) that designates component, AMB vendor, and PCB revisions. Consult factory for current revision codes. Example: MT18RTF25672FDY-667E1D4. PDF: 09005aef82b63cf2 rtf18c256x72fdy.pdf - Rev. C 12/09 EN ...

Page 3

Pin Assignments and Descriptions Table 4: Pin Assignments 240-Pin FBDIMM Front Pin Symbol Pin Symbol Pin Symbol Pin Symbol PN3 PN3 ...

Page 4

Table 5: Pin Descriptions Symbol Type Description PS[9:0] Input Primary southbound data, positive lines. PS#[9:0] Input Primary southbound data, negative lines. SCK Input System clock input, positive line. SCK# Input System clock input, negative line. SCL Input Serial presence-detect (SPD) ...

Page 5

Functional Block Diagram Figure 2: Functional Block Diagram CS1# CS0# DQS0 DQS0# DM0 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQS1 DQS1# DM5 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 DQS2 DQS2# DM2 DQ16 DQ17 DQ18 DQ19 DQ20 ...

Page 6

Electrical Specifications Stresses greater than those listed may cause permanent damage to the module. This is a stress rating only, and functional operation of the module at these or any other condi- tions outside those indicated in the device data ...

Page 7

Module Dimensions Figure 3: 240-Pin DDR2 FBDIMM 66.68 (2.63) TYP 0.5 (0.02) R (4X) 1.5 (0.059 (4X) 2.60 (0.102) D (2X) 5.2 (0.205) TYP 1.25 (0.0492) Pin 1 TYP 1.0 (0.039) TYP 9.9 (0.39) TYP 5.48 (0.216) ...

Page 8

S. Federal Way, P.O. Box 6, Boise, ID 83707-0006, Tel: 208-368-3900 www.micron.com/productsupport Customer Comment Line: 800-932-4992 Micron and the Micron logo are trademarks of Micron Technology, Inc. All other trademarks are the property of their respective owners. This data ...

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