AT5FC256-20 データシートの表示（PDF） - Atmel Corporation
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AT5FC256-20 Datasheet PDF : 15 Pages
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Description
Atmel’s Flash Memory Card provides the highest system
level performance for data and file storage solutions to the
portable PC market segment. Data files and applications
programs can be stored on the AT5FC256. This allows
OEM manufacturers of portable system to eliminate the
weight, power consumption and reliability issues associ-
ated with electro-mechanical disk-based systems. The
AT5FC256 requires a single voltage power supply for total
system operation. No batteries are needed for data reten-
tion due to its Flash-based technology. Since no high volt-
age (12-volt) is required to perform any write operation,
the AT5FC256 is suitable for the emerging "mobile" per-
sonal systems.
The AT5FC256 is compatible with the 68-pin
PCMCIA/JEIDA international standard. Atmel’s Flash
Memory Cards can be read in either a byte-wide or word-
wide mode which allows for flexible integration into various
system platforms. It can be read like any typical PCMCIA
SRAM or ROM card.
Block Diagram
The Card Information Structure (CIS) can be written by the
OEM or by Atmel at the attribute memory address space
using a format utility. The CIS appears at the beginning of
the card’s attribute memory space and defines the low-
level organization of data on the PC card. The AT5FC256
contains a separate 2K byte EEPROM memory for the
card’s attribute memory space.
The third party software solutions such as AWARD Soft-
ware’s CardWare system and the SCM’s Flash File Sys-
tem (FFS), enables Atmel’s Flash Memory Card to emu-
late the function of essentially all the major brand personal
computers that are DOS/Windows compatible.
For some unique portable computers, such as the
HP200/100/95LX series, the software Driver and Format-
ter are also available. The Atmel Driver and Formatter util-
izes a self-contained spare sector replacement algorithm,
enabled by Atmel’s small 256-byte sectors, to achieve
long term card reliability and endurance.
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AT5FC256
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