ATA Flash Drive
Ⅲ
AP-FD25A20AxxxxxR-XX
RoHS Compliant
ATA Flash Drive
Ⅲ
Specification for AFD
Ⅲ
253
May 9, 2008
Apacer Technology Inc.
9/F, No. 100, Hsin Tai Wu Rd., Hsichih, Taipei Hsien 221, Taiwan
Tel: +886-2-2696-1666
Fax: +886-2-2696-1668
www.apacer.com
1
© 2008 Apacer Technology Inc.
Rev. 1.1
ATA Flash Drive
Ⅲ
AP-FD25A20AxxxxxR-XX
Features:
Standard ATA/IDE Bus Interface
–
512 bytes per sector
–
ATA command set compatible
–
Support up to PIO Mode-4
–
Support up to Multi-word DMA Mode-2
–
Support up to Ultra DMA Mode-4
Capacity
–
256, 512 MB
–
1, 2, 4, 8, 16, 32 GB
Fast sustained read performance
–
Support up to 35 MB/sec
Fast sustained write performance
–
Support up to 25 MB/sec
•
Intelligent ATA/IDE module
– Embedded Flash File System (FFS)
–
Dynamic wear-leveling algorithms to
substantially increase longevity of flash
media
– Built-in BCH ECC support for correcting
up to 8 random single-bit errors per 512-
byte sector
Power Management Unit
–
Immediate disabling of unused circuitry
without host intervention
–
Zero wake-up latency
Temperature ranges
–
0°C to 70°C for operation (Standard)
1
–
-40°C to 85°C for operation (ET )
–
-40°C to 100°C for storage
Supply voltage
–
5V
Low power consumption
–
Active mode: 138 mA
–
Sleep mode: 2000 A
Connector type
–
44 pin male
RoHS Compliant
1.
Extended Temperature
2
© 2008 Apacer Technology Inc.
Rev. 1.1
ATA Flash Drive
Ⅲ
AP-FD25A20AxxxxxR-XX
Table of Contents
1. GENERAL DESCRIPTION ................................................................................................ 4
1.1 P
ERFORMANCE
-O
PTIMIZED
C
ONTROLLER
.......................................................................................................4
1.1.1 Power Management Unit (PMU).............................................................................................................4
1.1.2 SRAM Buffer ..........................................................................................................................................4
1.1.3 Embedded Flash File System ..................................................................................................................4
1.1.4 Error Correction Code (ECC).................................................................................................................4
2. FUNCTIONAL BLOCK ...................................................................................................... 5
3. PIN ASSIGNMENTS ........................................................................................................... 6
4. CAPACITY SPECIFICATION ........................................................................................... 7
4.1 P
ERFORMANCE
S
PECIFICATION
.......................................................................................................................7
4.2 E
NVIRONMENTAL
S
PECIFICATIONS
.................................................................................................................7
5. SOFTWARE INTERFACE ................................................................................................ 8
5.1 ATA-F
LASH
D
RIVE
C
OMMAND
S
ET
................................................................................................................8
6. ELECTRICAL SPECIFICATION ................................................................................... 10
7. PHYSICAL CHARACTERISTICS.................................................................................. 11
8. PRODUCT ORDERING INFORMATION ..................................................................... 13
8.1 P
RODUCT
C
ODE
D
ESIGNATIONS
....................................................................................................................13
8. 2 V
ALID
C
OMBINATIONS
................................................................................................................................14
3
© 2008 Apacer Technology Inc.
Rev. 1.1
ATA Flash Drive
Ⅲ
AP-FD25A20AxxxxxR-XX
1. General Description
Apacer’s ATA-Flash Drive (AFD) is a high-performance, solid state drive (SSD) designed to replace a
conventional IDE hard disk drive. AFD supports standard ATA/IDE protocol and can be plugged into a
standard IDE connector commonly found in desktop or portable PCs. It is more rugged, reliable and
power-efficient compared to the mechanical hard drive and is designed for use in rugged laptops, military
devices, thin clients, Point of Sale (POS) terminals, telecom, medical instruments, surveillance systems
and industrials PCs. AFD also offers users selectable Master/Slave operation through an external jumper
setting. Apacer AFD Series is the best drop-in replacement for high-maintenance HDD where reliability is
a major concern.
AFD includes a built-in microcontroller and file management firmware that communicates through with the
ATA standard interfaces. This means the AFD does not require any additional or proprietary host software
such as the Flash File System (FFS) and Memory Technology Driver (MTD) software. AFD is designed to
work at 5 Volts, support the standard ATA/IDE protocol up to PIO Mode-4, Multiword DMA Mode-2, and
Ultra DMA Mode-4 interfaces, and use a standard ATA driver that fits to all major operating systems such
as Windows 9x/ME/2000/NT/XP/CE, Mac OS, and Unix etc.
1.1 Performance-Optimized Controller
The heart of an ATA-Flash Driver is the ATA controller, which translates standard ATA signals into the
data and controls of the flash media. This proprietary ATA controller is specifically designed to attain high
data throughput from the host to the flash.
1.1.1 Power Management Unit (PMU)
The power management unit (PMU) controls the power consumption of the ATA-Flash Drive controller. It
can dramatically extend product battery life by leaving the idle part of the circuitry into sleep mode. The
PMU has zero wake-up latency.
1.1.2 SRAM Buffer
The SRAM buffer is a key contributor to the ATA controller performance. It optimizes data writes to the
flash.
1.1.3 Embedded Flash File System
The embedded Flash File System (FFS) is an integral part of the ATA controller. It contains the MCU
firmware to perform the following tasks:
1.
Translate host side signals into flash media writes and reads
2.
Provide dynamic data flash media wear leveling to spread the flash writes across all unused
memory address space to increase the longevity of flash media
3.
Keep track of data file structures
1.1.4 Error Correction Code (ECC)
The ATA-Flash Drive uses BCH Error Detection Code (EDC) and Error Correction Code (ECC) algorithms
which correct up to eight random single-bit errors for each 512-byte block of data. High performance is
achieved through hardware-based error detection and correction.
4
© 2008 Apacer Technology Inc.
Rev. 1.1
ATA Flash Drive
Ⅲ
AP-FD25A20AxxxxxR-XX
2. Functional Block
The ATA-Flash Drive (AFD) includes the ATA controller and flash media, as well as the ATA standard
interface. Figure 2-1 shows the functional block diagram.
Flash Array
Flash
Media
HOST
ATA/IDE Bus
ATA
Controller
Flash
Media
Flash
Media
Flash
Media
.
.
.
Figure 2-1:
ATA-Flash Drive functional block diagram
5
© 2008 Apacer Technology Inc.
Rev. 1.1
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