Transcend TS120GSSD25D-M Manual

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2.5” Solid State Drive

Transcend Information Inc.

Preliminary V1.0

Description

Transcend 2.5” SATA II solid state drive is a huge

capacity, high speed, and low power consumption

without moving parts which design for take the place

of traditional hard disk drive. It provides fast read and

write performance for high end system such as

server and storage system. Build in advance ECC

and global wear-leveling provide a durable solution is

perfect replacement storage device for Server

systems, Storage systems, PCs, Laptops and

gaming systems.

Placement

Features

•Fully SATA II 3.0Gbps compatible

•Non-volatile Flash Memory for outstanding data

retention

•Built-in DRAM cache buffer

•Built-in ECC (Error Correction Code) functionality and

wear-leveling algorithm ensures highly reliable of data

transfer

•Lower Power Consumption

•Shock resistance

Dimensions

Side Millimeters Inches

A 100.00 ±0.40 3.937 ±0.016

B 69.85 ±0.20 2.750 ±0.008

C 9.50 ±0.20 0.374 ±0.008

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Specifications

Physical Specification

Form Factor 2.5-inch HDD

Storage Capacities 60GB and 120GB

Length 100.00 ±0.40

Width 69.85 ±0.20

Dimensions (mm)

Height 9.50 ±0.20

Input Voltage 5V ±5%

Weight 91g ±2g

Connector SATA 7+15 pins combo connector

Environmental Specifications

Operating Temperature 0 ℃to 70 ℃

Storage Temperature - 40 ℃to 85 ℃

Performance

Model P/N Sequential Read(Max.) Sequential Write(Max.)

TS60GSSD25D-M 210 MB/s 150 MB/s

TS120GSSD25D-M 230 MB/s 180 MB/s

Actual Capacity

Model P/N User Max. LBA Cylinder Head Sector

TS60GSSD25D-M 125,045,424 7,783 255 63

TS120GSSD25D-M 250,067,567 15,565 255 63

Power Requirements

Input Voltage 5V ±5% @25℃

Mode Max. (mA) Max. (W)

Write(peak) 395.6 1.98

Read(peak) 176.7 0.88

Power Consumption

(60GB) Idle(peak) 88.3 0.44

Write(peak) 534.9 2.67

Read(peak) 196.9 0.98

Power Consumption

(120GB) Idle(peak) 88.3 0.44

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Reliability

Data Reliability Supports BCH ECC 8 ,12 or 16bits/sector

Data Retention 10 years

MTBF 1.5M hours

Endurance 60GB: 75.7 years @ 20GB write/day

120GB: 151.4 years @ 20GB write/day

Vibration

Operating 5.0G, 15 – 800Hz

Non-Operating 5.0G, 15 – 800Hz

* Note: Reference to the IEC 60068-2-6 Testing procedures; Operating-Sine wave, 5-800Hz/1 oct., 1.5mm, 3g, 0.5

hr./axis, total 1.5 hrs.

Shock

Operating 1500G, 0.5ms

Non-Operating 1500G, 0.5ms

* Note: Reference to the IEC 60068-2-27 Testing procedures; Operating-Half-sine wave, 1500g, 0.5ms, 3 times/dir., total

18 times.

Regulations

Compliance CE, FCC and BSMI

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Package Dimensions

Below figure illustrates the Transcend 2.5” SATA Solid State Drive. All dimensions are in mm.

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Pin Assignments

Pin No. Pin Name Pin No. Pin Name

01 GND 02 A+

03 A- 04 GND

05 B- 06 B+

07 GND 08 NC

09 NC 10 NC

11 GND 12 GND

13 GND 14 5V

15 5V 16 5V

17 GND 18 DAS/DSS

19 GND 20 NC

21 NC 22 NC

Pin Layout

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Block Diagram

Flash

ATA II

0Gb/s

32bits

16bits 16bits 16bits 16bits

SATA

SSD

Controller

SATA Connector

DRAM

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2.5” Solid State Drive

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Reliability

Wear-Leveling algorithm

The controller supports static/dynamic wear leveling. When the host writes data, the controller will find and use the block

with the lowest erase count among the free blocks. This is known as dynamic wear leveling. When the free blocks' erase

count is higher than the data blocks', it will activate the static wear leveling, replacing the not so frequently used user

blocks with the high erase count free blocks.

ECC algorithm

The controller use Reed Solomon code or BCH code option

Reed Solomon: 6Bytes/sector for 128Bytes spare and 12Bytes/sector for 218Bytes spare

BCH: 8 or 12 bits/sector for 128Bytes spare and 16bits/sector for 218Bytes spare size

Bad-block management

When the flash encounters ECC failed, program fail or erase fail, the controller will mark the block as bad block to

prevent the used of this block and caused data lost later on.

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Supported ATA Command Lists

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SMART

SMART subcommand sets

In order to select a subcommand the host must write the subcommand code to the device's Features Register before

issuing the SMART Function Set command. The subcommands are listed below.

SMART Read Data (subcommand D0h)

This subcommand returns the device's Attribute Values to the host. The Attribute Values consist of 512bytes.

Device Attribute Data Structure

Individual Attribute Data Structure

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Attribute ID Numbers

* indicates that the corresponding Attribute Values is fixed value for compatibility.

SMART Save Attribute Values (subcommand D3h)

This subcommand causes the device to immediately save any updated Attribute Values to the device's Attribute Data

sector regardless of the state of the Attribute Autosave feature.

SMART Execute Off-line Immediately (subcommand D4h)

This subcommand causes the device to start the off-line process for the requested mode and operation. The LBA Low

SMART Read Log Sector (subcommand D5h)

This command returns the specified log sector content to the host. LBA Low and Sector Count registers shall be set to

specify the log sector and sector number to be written.

SMART Log Directory

SMART summary error log sector

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