RoHS Compliant
Serial ATA Flash Drive
Specifications for SAFD 181
December 17, 2009
Version 1.3
Apacer Technology Inc.
9/F, No. 100, Hsin Tai Wu Rd., Hsichih, Taipei Hsien 221, Taiwan
Apacer Technology Inc.
Tel:Fl., 75 Xintai 5
th
Rd., Sec.1,+886-2-2696-1668
4th +886-2-2696-1666 Fax: Hsichih, Taipei Hsien 221, Taiwan
www.apacer.com
Tel: +886-2-2698-2888 Fax: +886-2-2698-2889
www.apacer.com
Serial ATA Flash Drive
AP-SAFD18BQAxxxxS-XXEL
Features:
Standard Serial ATA 2.5 (Gen. 2)
–
Serial ATA 2.5 (Gen. 2)
–
SATA II, 3.0 Gbps
–
ATA-compatible command set
Capacities
–
8, 16, and 32 GB
Performance
–
Burst read/write: 300 MB/sec
–
Sustained read: up to 160 MB/sec
–
Sustained write: up to 135 MB/sec
Intelligent endurance design
–
Built-in hardware ECC, enabling up to
8/15 bit correction per 512 bytes
–
Global 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
–
Power Failure management
–
Quick Erase
–
S.M.A.R.T. technology
NAND Flash Type: SLC
Zero power data retention
–
No battery required for data storage
Temperature ranges
– Operation:
Standard: 0°C to 70°C
Extended Temperature: -40°C to 85°C
– Storage: -40°C to 100°C
Supply voltage
–
3.3 V
±
5%
Low power consumption
–
Active mode: 400 mA (Max)
–
Idle mode: 216 mA
Form factor
–
1.8 inch
Connector
–
7-pin SATA male connector
–
9-pin SATA power connector
RoHS compliant
1
© 2009 Apacer Technology Inc.
Rev. 1.3
Serial ATA Flash Drive
AP-SAFD18BQAxxxxS-XXEL
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 .................................................................................................... 6
2.1 Command Set.......................................................................................................................... 6
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 Quick Erase ............................................................................................................................. 8
3.6 S.M.A.R.T. Technology............................................................................................................ 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
6. Physical Characteristics........................................................................................ 12
7. Product Ordering Information ............................................................................... 14
7.1 Product Code Designations.................................................................................................. 14
7.2 Valid Combinations............................................................................................................... 15
2
© 2009 Apacer Technology Inc.
Rev. 1.3
Serial ATA Flash Drive
AP-SAFD18BQAxxxxS-XXEL
1. Product Description
1.1
Introduction
Apacer’s SAFD 181 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, the SAFD drive interfaces with the
host allowing data to be seamlessly transferred between the host and the flash devices.
The SAFD 181 drive is designed with a single-chip controller, offering capacities of up to 128 gigabytes and
providing full support for the SATA II high-speed interface standard. It can operate at sustained access rates
of up to 100 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 181 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 181 provides
the S.M.A.R.T. feature that follows the SATA Rev. 2.5, 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 181 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 SAFD 181 block diagram
3
© 2009 Apacer Technology Inc.
Rev. 1.3
Serial ATA Flash Drive
AP-SAFD18BQAxxxxS-XXEL
1.3
ATA Mode Support
Up to PIO mode-4
Up to Multiword DMA mode-2
Up to UDMA mode-5
The SAFD 181 provides ATA mode support as follows:
1.4
Capacity Specification
Capacity specification of the SAFD 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
16 GB
32 GB
1
Total Bytes
8,061,419,520
16,139,681,792
32,296,140,800
Cylinders
15620
16383
16383
Heads
16
16
16
Sectors
63
63
63
Max LBA
15,744,960
31,522,816
63,078,400
1
1
Cylinders, heads or sectors are not applicable for these capacities. Only LBA addressing applies.
1.5
Performance
Performance of the SAFD is shown in Table 1-2.
Table 1-2
Performance specification
Capacity
Performance
Sustained Read
(MB/s)
Sustained Write
(MB/s)
8GB
155
106
16GB
159
106
32GB
155
136
4
© 2009 Apacer Technology Inc.
Rev. 1.3
ARM Technology
京公网安备 11010802033920号
EEWORLD
