參數(shù)資料
型號： SST48CF256
廠商： Silicon Storage Technology, Inc.
英文描述： CompactFlash Card
中文描述： CF卡
文件頁數(shù)： 5/60頁
文件大?。?/td> 572K
代理商： SST48CF256
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 C
OMPACT
F
LASH
B
LOCK
D
IAGRAM
375 ILL1-1.4
Embedded
Flash
File System
MCU
ECC
To
Host
Internal
DMA
SRAM Buffer
ATA Controller
PMU
Flash
Media
相關PDF資料
PDF描述
SST48CF256-C1 CompactFlash Card
SST49LF003A-33-4C-NH 2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF003A-33-4C-WH MB 6C 6#20 SKT PLUG
SST49LF002A 2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002A-33-4C-NH 2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
相關代理商/技術參數(shù)
參數(shù)描述
SST48CF256-C1 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:CompactFlash Card
SST49LF002A 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002A-33-4C-NH 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002A-33-4C-WH 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002B-33-4C-NH 功能描述:閃存 256K x8 (2Mbit) 33ns RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結構:256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel
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