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SST48CF064-C1 데이터시트(PDF) 5 Page - Silicon Storage Technology, Inc

부품명 SST48CF064-C1
상세설명  CompactFlash Card
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제조업체  SST [Silicon Storage Technology, Inc]
홈페이지  http://www.sst.com/
Logo SST - Silicon Storage Technology, Inc

SST48CF064-C1 데이터시트(HTML) 5 Page - Silicon Storage Technology, Inc

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Data Sheet
CompactFlash Card
SST48CF008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192 / 256
5
©2001 Silicon Storage Technology, Inc.
S71125-03-000
9/01
375
1.0 GENERAL DESCRIPTION
The SST’s CompactFlash card contains a controller,
embedded firmware storage and flash media in a match-
book sized package with a 50-pin connector consisting of
two rows of 25 female contacts each on 50 mil (1.27 mm)
centers. Refer to Figure 1 for SST’s CompactFlash card
block diagram. The controller interfaces with the host sys-
tem allowing data to be written to and read from the flash
media.
1.1 Performance-optimized ATA Controller
The heart of a CompactFlash card is the ATA controller
which translates standard IDE/ATA signals into flash media
data and controls. SST’s CompactFlash card contains a
proprietary ATA controller that was specifically designed to
attain high data throughput from host to flash. The following
components contribute to the ATA controller’s performance.
1.1.1 Microcontroller Unit (MCU)
The MCU translates IDE/ATA commands into data and
control signals required for flash memory operation.
1.1.2 Internal Direct Memory Access (DMA) Control
The ATA controller inside SST’s CompactFlash card uses
DMA allowing instant data transfer to memory. This imple-
mentation eliminates controller overhead associated with
traditional, firmware based, memory control, increasing
data transfer rate.
1.1.3 Power Management Unit (PMU)
Power Management Unit controls the power consumption
of the CompactFlash card. The PMU dramatically extends
product battery life by putting the part of the circuitry that is
not in operation into sleep mode.
1.1.4 SRAM Buffer
A key contributor to the ATA controller performance is a
SRAM buffer. The buffer optimizes host’s data writes to
flash media.
1.1.5 Embedded Flash File System
Embedded Flash File System is an integral part of the
SST’s ATM controller. It contains MCU firmware that per-
forms the following tasks:
1. Translates host side signals into flash media
Writes and Reads.
2. Provides flash media wear leveling to spread the
flash writes across all the memory address space
to increase the longevity of flash media.
3. Keeps track of data file structures.
1.1.6 Error Correction Code (ECC)
The ATA Controller contains ECC algorithm that corrects
3 bytes of error per 512 Byte sector.
FIGURE 1: SST COMPACTFLASH BLOCK DIAGRAM
375 ILL1-1.4
Embedded
Flash
File System
MCU
ECC
To
Host
Internal
DMA
SRAM Buffer
ATA Controller
PMU
Flash
Media


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