Transcend JM388Q643A-6 Datasheet download pdf

240PIN DDR2 667 Unbuffered DIMM

1GB With 64Mx8 CL5

Transcend Information Inc.

Description

The JM388Q643A-6 is a 128M x 64bits DDR2-667

Unbuffered DIMM. The JM388Q643A-6 consists of 16pcs

64Mx8bits DDR2 SDRAMs in 60 ball FBGA packages

and a 2048 bits serial EEPROM on a 240-pin printed

circuit board. The JM388Q643A-6 is a Dual In-Line

Memory Module and is intended for mounting into 240-pin

edge connector sockets.

Synchronous design allows precise cycle control with the

use of system clock. Data I/O transactions are possible

on both edges of DQS. Range of operation frequencies,

programmable latencies allow the same device to be

useful for a variety of high bandwidth, high performance

memory system applications.

Features

• RoHS compliant products

• JEDEC standard 1.8V ± 0.1V Power supply

• VDDQ=1.8V ± 0.1V

• Max clock Freq: 333MHZ; 667Mb/S/Pin.

• Posted CAS

• Programmable CAS Latency: 3,4,5

• Programmable Additive Latency :0, 1,2,3 and 4

• Write Latency (WL) = Read Latency (RL)-1

• Burst Length: 4,8(Interleave/nibble sequential)

• Programmable sequential / Interleave Burst Mode

• Bi-directional Differential Data-Strobe (Single-ended

data-strobe is an optional feature)

• Off-Chip Driver (OCD) Impedance Adjustment

• MRS cycle with address key programs.

• On Die Termination

• Serial presence detect with EEPROM

Placement

PCB: 09-2345

1 2 3 4 5 6 ... 10 11

Summary of Contents

Page 1

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 1Description The JM388Q643A-6 is a 1

Page 2

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 10SERIAL PRESENCE DETECT SPECIFICATI

Page 3 - Pinouts:

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 1136 Write recovery time(=tWR) 15ns

Page 4

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 2Dimensions Side Millimeters Inch

Page 5

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 3Pinouts: Pin No Pin Name Pin No Pi

Page 6

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 4Block Diagram DQS0DM0/DQS0/

Page 7 - Unit Note

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 5Absolute Maximum DC Ratings Paramet

Page 8

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 6IDD Specification parameters Defini

Page 9

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 7 Input AC Logic Level Parameter Sy

Page 10 - Transcend Information Inc

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 8Timing Parameters & Specificati

Page 11

JJJMMM333888888QQQ666444333AAA---666 240PIN DDR2 667 Unbuffered DIMM1GB With 64Mx8 CL5 Transcend Information Inc. 9Four Activate Window for 2KB page s

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Transcend JM388Q643A-6 Datasheet

Browse online or download Datasheet for Memory modules Transcend JM388Q643A-6. Transcend 1GB, 64Mx8, CL5, DIMM 240pin, DDR2, 667, ECC Unbuffered User Manual

Summary of Contents

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