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AP-FD18A20B0001GR Datasheet(PDF) 4 Page - List of Unclassifed Manufacturers

Part # AP-FD18A20B0001GR
Description  ATA Flash Drive ?
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AP-FD18A20B0001GR Datasheet(HTML) 4 Page - List of Unclassifed Manufacturers

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ATA Flash Drive Ⅲ
AP-FD18A20BxxxxxR-XXX
4
© 2008 Apacer Technology Inc.
Rev. 1.1
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 ZIF
connector commonly found in 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. 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 and is set to the Master operation in default. 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 3.3 Volts, support the standard ATA/IDE
protocol up to PIO Mode-4, Multiword DMA Mode-2, and Ultra DMA Mode-4 interfaces and uses a
standard ATA driver that fits to all major operating systems such as the Windows series, MAC OS, and
Unix etc.
1.1 Performance-Optimized Controller
The heart of an ATA-Flash Drive is the ATA controller, which translates standard ATA signals into the
Flash Media 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. It reduces
the power consumption of the ATA-Flash Drive Controller by putting circuitry not in operation into sleep
mode. The PMU has zero wake-up latency.
1.1.2 SRAM Buffer
The ATA Flash Drive Controller performs as an SRAM buffer to optimize the host’s data transfer to and
from the flash media.
1.1.3 Embedded Flash File System
The embedded Flash File System (FFS) is an integral part of the ATA-Flash Drive Controller. It contains
MCU firmware that performs the following tasks:
1.
Translates host side signals into flash media Writes and Reads.
2.
Provides dynamic flash media wear leveling to spread the flash writes across all unused memory
address space to increase the longevity of flash media.
3.
Keeps track of data file structures
1.1.4 Error Correction Code (ECC)
The ATA-Flash Drive Controller 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.


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