AP-SAFD255AA008GS-T [ETC]
Serial ATA Flash Drive;型号: | AP-SAFD255AA008GS-T |
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.
4th Fl., 75 Xintai 5th Rd., 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.
1
© 2011 Apacer Technology Inc.
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
2
© 2011 Apacer Technology Inc.
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
3
© 2011 Apacer Technology Inc.
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
16,383
16,383
Heads
16
Sectors
63
Max LBA**
15,456,672
30,941,440
61,866,496
123,732,736
16 GB
32 GB
64 GB
16
63
16
63
16
63
*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
85
16GB
230
32GB
230
64GB
230
Performance
Sustained Read
(MB/s)
Sustained Write
(MB/s)
180
170
175
Note: Performance varies from flash configurations.
4
© 2011 Apacer Technology Inc.
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
Pin
Signal/Description
S1
S2
S3
S4
S5
S6
S7
GND
RxP
RxN
GND
TxN
P1
P2
Not used (3.3V)
Not used (3.3V)
Not used (3.3V)
Ground
Serial Data Receiver
P3
P4
P5
Ground
Serial Data Transmitter
TxP
P6
Ground
GND
P7
5V Pre-Charge
5V
P8
P9
5V
P10
P11
P12
P13
P14
P15
Ground
Ground
Ground
Not used (12V Pre-Charge)
Not used (12V)
Not used (12V)
5
© 2011 Apacer Technology Inc.
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.
6
© 2011 Apacer Technology Inc.
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
7
© 2011 Apacer Technology Inc.
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.
8
© 2011 Apacer Technology Inc.
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.
9
© 2011 Apacer Technology Inc.
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.)
10
© 2011 Apacer Technology Inc.
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
95
16GB
486
90
32GB
532
87
64GB
535
94
Performance
Active Mode
(mA)
Idle Mode
(mA)
11
© 2011 Apacer Technology Inc.
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
12
© 2011 Apacer Technology Inc.
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
13
© 2011 Apacer Technology Inc.
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
14
© 2011 Apacer Technology Inc.
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.
15
© 2011 Apacer Technology Inc.
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
16
© 2011 Apacer Technology Inc.
Rev. 1.2
Serial ATA Flash Drive
AP-SAFD255AXxxxxS-XXT
Global Presence
Apacer Technology Inc.
4th Fl., 75 Xintai 5th Rd., 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
17
© 2011 Apacer Technology Inc.
Rev. 1.2
Mouser Electronics
Authorized Distributor
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