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184PIN DDR266 Unbuffered DIMM

512MB With 64Mx8 CL2.5

Transcend Information Inc.

Description

The JM367D643A-75 is a 64M x 64bits Double Data Rate

SDRAM high-density Module for DDR266.The

JM367D643A-75 consists of 8pcs CMOS 64Mx8 bits

Double Data Rate SDRAMs in 66 pin TSOP-II 400mil

packages and a 2048 bits serial EEPROM on a 184-pin

printed circuit board. The JM367D643A-75 is a Dual

In-Line Memory Module and is intended for mounting into

184-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 Production Compliant

• Power supply: VDD: 2.5V ± 0.2V, VDDQ: 2.5V ± 0.2V

• Max clock Freq: 133MHZ.

• Double-data-rate architecture; two data transfers per

clock cycle

• Differential clock inputs (CK and /CK)

• DLL aligns DQ and DQS transition with CK transition

• Auto and Self Refresh 7.8us refresh interval.

• Data I/O transactions on both edge of data strobe.

• Edge aligned data output, center aligned data

• Serial Presence Detect (SPD) with serial EEPROM

• SSTL-2 compatible inputs and outputs.

• MRS cycle with address key programs.

CAS Latency (Access from column address): 2.5

Burst Length (2,4,8)

Data Sequence (Sequential & Interleave)

Placement

PCB: 09-2430

1 2 3

Inhaltsverzeichnis

Seite 1

JJJMMM333666777DDD666444333AAA---777555 184PIN DDR266 Unbuffered DIMM 512MB With 64Mx8 CL2.5 Transcend Information Inc. 1Description The JM367D643A-75

Seite 2

JJJMMM333666777DDD666444333AAA---777555 184PIN DDR266 Unbuffered DIMM 512MB With 64Mx8 CL2.5 Transcend Information Inc. 2Dimensions Side Millimeters

Seite 3 - Pinouts:

JJJMMM333666777DDD666444333AAA---777555 184PIN DDR266 Unbuffered DIMM 512MB With 64Mx8 CL2.5 Transcend Information Inc. 3Pinouts: Pin No Pin Name Pin

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