AP-SAFD255AB032GS-ETT [ETC]

Serial ATA Flash Drive;


型号：	AP-SAFD255AB032GS-ETT
厂家：	ETC
描述：	Serial ATA Flash Drive
文件：	总19页 (文件大小：340K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

RoHS Compliant

Serial ATA Flash Drive

Specifications for SAFD 255

Apr 14, 2011

Version 1.2

Apacer Technology Inc.

4^thFl., 75 Xintai 5^thRd., Sec.1, Hsichih, New Taipei City, Taiwan 221

Tel: +886-2-2698-2888 Fax: +886-2-2698-2889

www.apacer.com

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

Features:

ꢀ

Standard Serial ATA 2.6 (Gen. 2)

ꢀ

Zero power data retention

No battery required for data storage

–

Serial ATA 2.6 (Gen. 2)

SATA II, 3.0 Gbps

ATA-compatible command set

–

Temperature ranges

–

Operation:

ꢀ

Capacities

Standard: 0°C to 70°C

Extended Temperature: -40°C to 85°C

Storage: -40°C to 100°C

–

8, 16, 32, 64 GB

–

Performance*

–

Burst read/write: 300 MB/sec

Sustained read: up to 230 MB/sec

Sustained write: up to 175 MB/sec

ꢀ

Supply voltage

5.0 V ± 5%

–

Low power consumption*

ꢀ

Intelligent endurance design

–

Active mode: 535 mA@5.0 V

Idle mode: 94 mA@5.0 V

Built-in hardware ECC, enabling up to

14/28 bit correction per 1K bytes

Static wear-leveling scheme together

with dynamical block allocation to

significantly increase the lifetime of a

flash device and optimize the disk

performance

Flash bad-block management

S.M.A.R.T.

Power Failure Management

ATA Secure Erase

–

ꢀ

Form factor

2.5 inch

–

Connector

–

7-pin SATA male connector

15-pin SATA power connector

–

ꢀ

RoHS compliant

Trim

ꢀ

NAND Flash Type: SLC

*Varies from capacities.

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

Table of Contents

1. Product Description................................................................................................. 3

1.1 Introduction ..................................................................................................................................3

1.2 Functional Block Diagram...........................................................................................................3

1.3 ATA Mode Support.......................................................................................................................4

1.4 Capacity Specification.................................................................................................................4

1.5 Performance .................................................................................................................................4

1.6 Pin Assignments ..........................................................................................................................5

2. Software Interface .................................................................................................... 7

2.1 Command Set ...............................................................................................................................7

3. Flash Management................................................................................................... 8

3.1 Error Correction/Detection..........................................................................................................8

3.2 Bad Block Management...............................................................................................................8

3.3 Wear Leveling...............................................................................................................................8

3.4 Power Failure Management.........................................................................................................8

3.5 ATA Secure Erase........................................................................................................................8

3.6 S.M.A.R.T.......................................................................................................................................9

3.7 TRIM...............................................................................................................................................9

4. Environmental Specifications............................................................................... 10

4.1 Environments .............................................................................................................................10

4.2 Mean Time Between Failures (MTBF) ......................................................................................10

4.3 Certification and Compliance ...................................................................................................10

5. Electrical Characteristics ...................................................................................... 11

5.1 Operating Voltage ......................................................................................................................11

5.2 Power Consumption ..................................................................................................................11

6. Physical Characteristics........................................................................................ 12

6.1 Plastic Housing ..........................................................................................................................12

6.2 Metal Housing.............................................................................................................................13

7. Product Ordering Information............................................................................... 14

7.1 Product Code Designations......................................................................................................14

7.2 Valid Combinations....................................................................................................................15

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

1. Product Description

1.1 Introduction

Apacer’s Serial ATA Flash Drive (SAFD) 255 is a solid-state disk (SSD) drive that contains a controller,

embedded firmware, and flash media along with a male connector. Using single-level cell (SLC) NAND flash

memory devices, the SAFD 255 interfaces with the host allowing data to be seamlessly transferred between

the host and the flash devices.

The SAFD 255 is designed with a single-chip controller, offering capacities of up to 64 gigabytes and providing

full support for the SATA II high-speed interface standard. It can operate at burst access rates of up to 300

megabytes per second, which is much faster than any other solid-state or traditional SATA drive currently

available on the market.

In addition to buffer management through dynamical allocation, the SAFD 255 adopts the Apacer-specific

static wear-leveling scheme to allow uniform use of all storage blocks, ensuring that the lifetime of a flash

media can be significantly increased and the disk performance is optimized as well. The SAFD 255 provides

the S.M.A.R.T. feature that follows the SATA Rev. 2.6, ATA/ATAPI-7 specifications and uses the standard

SMART command B0h to read data from the drive. This feature protects the user from unscheduled downtime

by monitoring and storing critical drive performance.

1.2 Functional Block Diagram

The SAFD 255 includes a single-chip SATA II Controller and the flash media, as well as the SATA standard

interface. The controller integrates the flash management unit with the controller itself to support multi-channel,

multi-bank flash arrays. Figure 1-1 shows the functional block diagram.

Figure 1-1 Apacer SAFD 255 block diagram

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

1.3 ATA Mode Support

The SAFD 255 provides ATA mode support as follows:

ꢀ

Up to PIO mode-4

Up to Multiword DMA mode-2

Up to UDMA mode-5

1.4 Capacity Specification

Capacity specification of the SAFD 255 product family is available as shown in Table 1-1. It lists the specific

capacity, the default numbers of logical cylinders and heads, and the number of logical sectors per track for

each product line.

Table 1-1 Capacity specification

Capacity

8 GB

Total Bytes*

7,913,816,064

15,842,017,280

31,675,645,952

63,351,160,832

Cylinders

15,334

16,383

Heads

Sectors

Max LBA**

15,456,672

30,941,440

61,866,496

123,732,736

16 GB

32 GB

64 GB

*Display of total bytes varies from file systems.

**Cylinders, heads or sectors are not applicable for these capacities. Only LBA addressing applies.

1.5 Performance

Performance of the SAFD 255 is shown in Table 1-2.

Table 1-2 Performance specification

Capacity

8GB

230

16GB

230

32GB

230

64GB

230

Performance

Sustained Read

(MB/s)

Sustained Write

(MB/s)

180

170

175

Note: Performance varies from flash configurations.

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

1.6 Pin Assignments

Figure 1-2 illustrates the SAFD 255 signal pins, and Table1-3 describes its power pins.

Figure 1-2 Pin Assignments

Table 1-3: Signal segment

Table 1-4: Power segment

Name Type

Description

Signal/Description

GND

RxP

RxN

GND

TxN

Not used (3.3V)

Ground

Serial Data Receiver

Ground

Serial Data Transmitter

TxP

Ground

GND

5V Pre-Charge

P10

P11

P12

P13

P14

P15

Ground

Not used (12V Pre-Charge)

Not used (12V)

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

Figure 1-3 SATA Cable/Connector Connection Diagram

The connector on the left represents the Host with TX/RX differential pairs connected to a cable. The

connector on the right shows the Device with TX/RX differential pairs also connected to the cable. Notice also

the ground path connecting the shielding of the cable to the Cable Receptacle.

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

2. Software Interface

2.1 Command Set

Table 2-1 summarizes the ATA commands supported by the SAFD 255.

Table 2-1: Command set

Code

E5h

06h

90h

E7h

EAh

ECh

E3h

E1h

91h

C8h

25h

C4h

29h

20h

24h

40h

42h

10h

F6h

Command

Code

F3h

F4h

F5h

F1h

F2h

70h

EFh

C6h

E6h

B0h

E2h

E0h

CAh

35h

C5h

39h

30h

34h

Command

Check Power Mode

Data Set Management

Execute Device Diagnostic

Flush Cache

Security Erase Prepare

Security Erase Unit

Security Freeze Lock

Security Set Password

Security Unlock

Seek

Flush Cache EXT

Identify Device

Idle

Set Features

Idle Immediate

Set Multiple Mode

Sleep

Initialize Device Parameters

Read DMA

SMART

Read DMA EXT

Read Multiple

Standby

Standby Immediate

Write DMA

Read Multiple EXT

Read Sector

Write DMA EXT

Write Multiple

Write Multiple EXT

Write Sector

Read Sector EXT

Read Verify Sectors

Read Verify Sectors EXT

Recalibrate

Write Sector EXT

Security Disable Password

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

3. Flash Management

3.1 Error Correction/Detection

The SAFD 255 implements a hardware ECC scheme, based on the BCH algorithm. It can detect and correct

up to 14 bits or 28 bits error in 1K bytes.

3.2 Bad Block Management

Although bad blocks on the flash media are already identified by the flash manufacturer, they can also be

accumulated over time during operation. The SAFD 255’s controller maintains a table that lists those normal

blocks with disk data, the free blocks for wear leveling, and bad blocks with errors. When a normal block is

detected broken, it is replaced with a free block and listed as a bad block. When a free block is detected

broken, it is then removed from the free block list and marked as a bad block.

During device operation, this ensures that newly accumulated bad blocks are transparent to the host. The

device will stop file write service once there are only two free blocks left such that the read function is still

available for copying the files from the disk into another.

3.3 Wear Leveling

The NAND flash devices are limited by a certain number of write cycles. When using a FAT-based file system,

frequent FAT table updates are required. If some area on the flash wears out faster than others, it would

significantly reduce the lifetime of the whole SSD, even if the erase counts of others are far from the write

cycle limit. Thus, if the write cycles can be distributed evenly across the media, the lifetime of the media can

be prolonged significantly. This scheme is called wear leveling.

Apacer’s wear-leveling scheme is achieved both via buffer management and Apacer-specific static wear

leveling. They both ensure that the lifetime of the flash media can be increased, and the disk access

performance is optimized as well.

3.4 Power Failure Management

The Low Power Detection on the controller initiates crucial data saving before the power supplied to the

device is too low. This feature prevents the device from crash and ensures data integrity during an

unexpected power-off.

3.5 ATA Secure Erase

Accomplished by the Secure Erase (SE) command, which added to the open ANSI standards that control disk

drives, “ATA Secure Erase” is built into the disk drive itself and thus far less susceptible to malicious software

attacks than external software utilities. It is a positive easy-to-use data destroy command, amounting to

electronic data shredding. Executing the command causes a drive to internally completely erase all possible

user data. This command is carried out within disk drives, so no additional software is required. Once

executed, neither data nor the erase counter on the device would be recoverable, which blurs the accuracy of

device lifespan. The process to erase will not be stopped until finished while encountering power failure, and

will be continued when power is back on.

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

3.6 S.M.A.R.T.

S.M.A.R.T. is an acronym for Self-Monitoring, Analysis and Reporting Technology, an open standard allowing

disk drives to automatically monitor their own health and report potential problems. It protects the user from

unscheduled downtime by monitoring and storing critical drive performance and calibration parameters. Ideally,

this should allow taking proactive actions to prevent impending drive failure.

Apacer SAFD 255 uses the standard SMART command B0h to read data from the drive for SMART feature as

the SATA Rev.2.6 ATA/ATAPI-7 specifications. Based on the SFF-8035i Rev. 2.0 specifications, Apacer

SMART defines vendor-specified SMART Attribute IDs (A0h, A1h, A2h, A3h, A4h-A5h) in the SAFD 255. They

represent initial bad block count, bad block count, spare block count, maximum erase count, and average

erase counts respectively. When the Apacer SMART Utility running on the host, it analyzes and reports the

disk status to the host before the SAFD 255 is in critical condition.

3.7 TRIM

Made of millions of NAND flash cells, SSD can be written into groups called pages in 4K size generally, but

can only be erased in larger groups called blocks of 128 pages or 512KB. These stipulations are partially the

source of many performance issues. Until an address gets used again, the SSD has to keep track of every

last bit of data that’s written on it. The ATA-TRIM instruction tilts the balance in favor of the SSD. TRIM

addresses a major part of the performance degradation issue over time that plagues all SSDs. A TRIM

enabled drive running an OS with TRIM support will stay closer to its peak performance over time.

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

4. Environmental Specifications

4.1 Environments

The SAFD 255 environmental specifications follow the US Military Standard MIL-STD-810F, as shown in

Table 4-1.

Table 4-1 SAFD 255 environmental specifications

Environment

Specification

0°C to 70°C (Operating – Standard); -40°C to 85°C ( Operating – ET*)

Temperature

-40°C to 100°C (Non-operating)

5% to 95% RH (Non-condensing)

Humidity

Vibration

Sine wave: 10~2000(Hz), 15(G)

Random: 20~2000(Hz), 7.7(Grms)

operating: 50(G), 11(ms)

Shock

non-operating: 1500(G), 0.5(ms)

*Extended Temperature

4.2 Mean Time Between Failures (MTBF)

Mean Time Between Failures (MTBF) is predicted based on reliability data for the individual components in

the SAFD 255. Although many component MTBFs are given in databases and often these values are not

really accurate, the prediction result for the SAFD 255 is more than 2,000,000 hours.

4.3 Certification and Compliance

The SAFD 255 complies with the following standards:

ꢀ

CE – EN55022/55024

FCC 47CFR Part15 Class B

RoHS

MIL-STD-810F

SATA II (SATA Rev. 2.6)

Up to ATA/ATAPI-7 ( including S.M.A.R.T.)

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

5. Electrical Characteristics

5.1 Operating Voltage

Table 5-1 lists the supply voltage for SAFD 255.

Table 5-1 SAFD 255 operating voltage

Parameter

Conditions

Supply voltage

5.0 V ±10% ( 4.5-5.5 V)

5.2 Power Consumption

Table 5-2 lists the SAFD 255 power consumption.

Table 5-2 SAFD 255 power consumption

Capacity

8GB

357

16GB

486

32GB

532

64GB

535

Performance

Active Mode

(mA)

Idle Mode

(mA)

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

6. Physical Characteristics

6.1 Plastic Housing

Figure 6-1 illustrates the overall dimensions of the SAFD 255 w/Plastic Housing, as listed in Table 6-1.

Table 6-1 SAFD 255 w/Plastic Housing dimensions

Dimension

Height

Millimeters (㎜)

9.30 ± 0.10

Width

69.85 ± 0.10

100.00 ± 0.10

Length

LED 1

LED 1: Access (R/W)

LED 2: Power

LED 2

Figure 6-1 SAFD 255 w/Plastic Housing physical dimensions

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

6.2 Metal Housing

Figure 6-2 illustrates the overall dimensions of the SAFD 255 w/Metal Housing, as listed in Table 6-2.

Table 6-2 SAFD 255 w/Metal Housing dimensions

Dimension

Height

Millimeters (㎜)

9.30 ± 0.20

Width

69.90 ± 0.15

100.00 ± 0.15

Length

Figure 6-2 SAFD 255 w/Metal Housing physical dimensions

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

7. Product Ordering Information

7.1 Product Code Designations

A P – SAFD 255 A X x x x x S – xx T

Flash type

Temperature Range

Blank: Standard

ET: Extended Temperature

Environmental Specification

Capacities:

008G =

8GB

016G = 16GB

032G = 32GB

064G = 64GB

Housing Type

A: Plastic Housing

B: Metal Housing

Solution version

2.5 inch Form Factor

Serial ATA Flash Drive

Apacer Product Code

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

7.2 Valid Combinations

A. Plastic Housing

Capacity

8GB

Standard

Extended Temperature

AP-SAFD255AA008GS-ETT

AP-SAFD255AA016GS-ETT

AP-SAFD255AA032GS-ETT

AP-SAFD255AA064GS-ETT

AP-SAFD255AA008GS-T

AP-SAFD255AA016GS-T

AP-SAFD255AA032GS-T

AP-SAFD255AA064GS-T

16GB

32GB

64GB

B. Metal Housing

Capacity

8GB

Standard

Extended Temperature

AP-SAFD255AB008GS-ETT

AP-SAFD255AB016GS-ETT

AP-SAFD255AB032GS-ETT

AP-SAFD255AB064GS-ETT

AP-SAFD255AB008GS-T

AP-SAFD255AB016GS-T

AP-SAFD255AB032GS-T

AP-SAFD255AB064GS-T

16GB

32GB

64GB

Note: Valid combinations are those products in mass production or will be in mass production. Consult your

Apacer sales representative to confirm availability of valid combinations and to determine availability of

new combinations.

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

Revision History

Revision

0.1

Description

Date

Preliminary release

07/09/2010

08/17/2010

02/23/2011

04/01/2011

04/14/2011

0.2

Updated command set, trim information, and global presence

Formal release

1.0

1.1

Updated Performance Specifications & Power Consumption

Updated Environmental Specifications

1.2

Rev. 1.2

Serial ATA Flash Drive

AP-SAFD255AXxxxxS-XXT

Global Presence

Apacer Technology Inc.

4^thFl., 75 Xintai 5^thRd., Sec.1

Hsichih, New Taipei City

Taiwan 221

Taiwan (Headquarters)

R.O.C.

Tel: +886-2-2698-2888

Fax: +886-2-2698-2889

amtsales@apacer.com

Apacer Memory America, Inc.

386 Fairview Way, Suite102,

Milpitas, CA 95035

Tel: 1-408-518-8699

Fax: 1-408-935-9611

U.S.A.

Japan

Europe

sa@apacerus.com

Apacer Technology Corp.

5F, Matsura Bldg., Shiba, Minato-Ku

Tokyo, 105-0014, Japan

Tel: 81-3-5419-2668

Fax: 81-3-5419-0018

jpservices@apacer.com

Apacer Technology B.V.

Aziëlaan 22,

5232 BA 's-Hertogenbosch,

The Netherlands

Tel: 31-73-645-9620

Fax: 31-73-645-9629

sales@apacer.nl

Apacer Electronic (Shanghai) Co., Ltd

1301, No.251,Xiaomuqiao Road, Shanghai,

200032, China

Tel: 86-21-5529-0222

Fax: 86-21-5206-6939

China

India

sales@apacer.com.cn

Apacer Technologies Pvt Ltd,

#1064, 1st Floor, 7th ‘A’ Main,

3rd Block Koramangala, Bangalore – 560 034

Tel: +91 80 4152 9061/62/63

Fax: +91 80 4170 0215

sales_india@apacer.com

Rev. 1.2

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Apacer:

AP-SAFD255AA008GS-T AP-SAFD255AA016GS-T AP-SAFD255AA032GS-T AP-SAFD255AA064GS-T AP-

SAFD255AA008GSETT AP-SAFD255AA016GSETT AP-SAFD255AA032GSETT AP-SAFD255AA064GSETT

AP-SAFD255AB032GS-ETT [ETC]

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