RoHS Compliant
Serial ATA Flash Drive
Specifications for AS203
July 14th, 2011
Apacer Technology Inc.
4th Fl., 75 Hsin Tai Wu Rd., Sec.1, Hsichih, New Taipei City, Taiwan 221
Tel: +886-2-2698-2888
www.apacer.com
Fax: +886-2-2698-2889
Serial ATA Flash Drive
APXXXXGAS203-X
Features:
z
Standard Serial ATA 2.6 (Gen. 2)
– Serial ATA 2.6 (Gen. 2)
– SATA II, 3.0 Gbps
– ATA-compatible command set
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Capacities
– 32, 64, 128, 256 GB
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Performance*
– Sustained read: up to 250 MB/sec
– Sustained write: up to 220 MB/sec
z
Intelligent endurance design
– Built-in ECC, enabling 48 bit correction
per 2KB page
– Superior 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
– TRIM
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Zero power data retention
– No battery required for data storage
z
Temperature ranges
– Operation: 0°C to 70°C
– Storage: -40°C to 85°C
z
Supply voltage
– 5.0 V ± 5%
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Power consumption**
– Active mode: 1030 mA (Max)
– Idle mode: 40 mA
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Form factor
– 2.5 inch
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Connector
– 7-pin SATA male connector
– 15-pin SATA power connector
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RoHS compliant
*Vary with flash configurations.
**Based on 128 GB model
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
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. Flash Management ................................................................................................... 7
2.1 Error Correction/Detection.......................................................................................................... 7
2.2 Bad Block Management............................................................................................................... 7
2.3 Wear Leveling ............................................................................................................................... 7
2.4 S.M.A.R.T....................................................................................................................................... 7
2.5 TRIM............................................................................................................................................... 8
3. Environmental Specifications ................................................................................. 9
3.1 Environments ............................................................................................................................... 9
3.2 Mean Time Between Failures (MTBF) ........................................................................................ 9
3.3 Certification and Compliance ..................................................................................................... 9
4. Physical Characteristics........................................................................................ 10
5. Product Ordering Information ............................................................................... 11
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
1. Product Description
1.1
Introduction
Apacer’s Serial ATA Flash Drive AS203 is a solid-state disk (SSD) drive that contains a controller, embedded
firmware, and flash media along with a male connector. Using NAND flash memory devices, AS203 drive
interfaces with the host allowing data to be seamlessly transferred between the host and the flash devices.
AS203 is designed with a single-chip controller, offering capacities of up to 256 gigabytes and providing full
support for the SATA II high-speed interface standard. It can operate at sustained access rates of up to 250
megabytes per second.
In addition to buffer management through dynamical allocation, AS203 adopts the Apacer-specific superior
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.
1.2
Functional Block Diagram
AS203 drive 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 AS203 block diagram
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
1.3
ATA Mode Support
AS203 provides ATA mode support as follows:
z
z
z
1.4
Up to PIO mode-4
Up to Multiword DMA mode-2
Up to UDMA mode-6
Capacity Specification
Capacity specification of the Apacer SSD 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
Total Bytes
Cylinders
Heads
Sectors
Max LBA*
32 GB
32,017,047,552
16383
16
63
62,533,296
64 GB
64,023,257,088
16383
16
63
125,045,424
128 GB
128,035,676,160
16383
16
63
250,069,680
256 GB
256,060,514,304
16383
16
63
500,118,192
*Cylinders, heads or sectors are not applicable for these capacities. Only LBA addressing applies.
1.5
Performance
Performance of AS203 in each capacity is shown in Table 1-2.
Table 1-2 Performance specification
Capacity
Performance
Sustained Read
(MB/s)
Sustained Write
(MB/s)
32 GB
64 GB
128 GB
256 GB
200
230
250
250
100
180
220
220
Note: Performances vary from flash configurations;
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
1.6
Pin Assignments
Table 1-3 describes AS203 signal segment, and Table1-4, its power segment.
Figure 1-2 SATA Connectors
Table 1-3: Signal segment
Name
Type
S1
GND
S2
RxP
S3
RxN
S4
GND
S5
TxN
S6
TxP
S7
GND
Table 1-4: Power segment
Description
Serial Data Receiver
Serial Data Transmitter
Pin
Signal/Description
P1
Not used (3.3V)
P2
Not used (3.3V)
P3
Not used (3.3V)
P4
Ground
P5
Ground
P6
Ground
P7
5V Pre-Charge
P8
5V
P9
5V
P10
Ground
P11
Reserved
P12
Ground
P13
Not used (12V Pre-Charge)
P14
Not used (12V)
P15
Not used (12V)
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
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 while 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.
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
2. Flash Management
2.1
Error Correction/Detection
AS203 implements a hardware ECC scheme, based on the algorithm, to achieve 48 bit correction per 2KB
page.
2.2
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 AS203’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.
2.3
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 superior wear
leveling to ensure the lifetime of the flash media can be increased and the disk access performance is
optimized as well.
2.4
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 AS203 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 are based on the SFF-8035i Rev. 2.0 specifications.
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
2.5
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.
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
3. Environmental Specifications
3.1
Environments
Table 3-1 AS203 environmental specifications
Environment
Temperature
Specification
0°C to 70°C (Operating)
-40°C to 85°C (Storage)
Humidity
95% under 55°C
Vibration
20G/80-2000Hz
Shock
3.2
1500G/0.5ms
Mean Time Between Failures (MTBF)
Mean Time Between Failures (MTBF) is predicted based on reliability data for the individual components in
the SAFD drive. Although many component MTBFs are given in databases and often these values are not
really accurate, the prediction result for AS203 is more than 1,000,000 hours.
3.3
Certification and Compliance
AS203 drive complies with the following standards:
z
z
z
z
CE
FCC
RoHS
SATA II (SATA Rev. 2.6)
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
4. Physical Characteristics
Figure 4-1 illustrates the overall dimensions of AS203 drive, as listed in Table 4-1.
Table 4-1 SAFD dimensions
Millimeters (㎜)
Dimension
Height
9.50 ± 0.20
Width
69.90 ± 0.15
Length
100.00 ± 0.20
Unit: ㎜
Figure 4-1 AS203 physical dimensions
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
5. Product Ordering Information
AP32GAS203
32 GB
AP32GAS203-1
AP32GAS203-5
AP64GAS203
64 GB
AP64GAS203-1
AP64GAS203-5
AP128GAS203
128 GB
AP128GAS203-1
AP128GAS203-5
AP256GAS203
256 GB
AP256GAS203-1
AP256GAS203-5
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.
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© 2011 Apacer Technology Inc.
Rev. 1.0
Serial ATA Flash Drive
APXXXXGAS203-X
Global Presence
Taiwan (Headquarters)
Apacer Technology Inc.
4th Fl., 75 Hsin Tai Wu Rd., Sec.1,
Hsichih, New Taipei City, 221
Taiwan, R.O.C.
Tel: +886-2-2698-2888
Fax: +886-2-2698-2889
amtsales@apacer.com
U.S.A.
Apacer Memory America, Inc.
386 Fairview Way, Suite102,
Milpitas, CA 95035
Tel: 1-408-518-8699
Fax: 1-408-935-9611
sa@apacerus.com
Japan
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
Europe
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
China
Apacer Electronic (Shanghai) Co., Ltd
1301, No.251,Xiaomuqiao Road, Shanghai,
200032, China
Tel: 86-21-5529-0222
Fax: 86-21-5206-6939
sales@apacer.com.cn
India
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
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© 2011 Apacer Technology Inc.
Rev. 1.0