AT5FC008-20 データシートの表示（PDF） - Atmel Corporation
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AT5FC008-20 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 AT5FC008. This allows OEM manufacturers of
portable system to eliminate the weight, power consumption and
reliability issues associated with electro-mechanical disk-based
systems. The AT5FC008 requires a single voltage power supply
for total system operation. No batteries are needed for data re-
tention due to its Flash-based technology. Since no high voltage
(12 V) is required to perform any write operation, the
AT5FC008 is suitable for the emerging "mobile" personal sys-
tems.
The AT5FC008 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.
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 AT5FC008 contains a separate 2K
byte EEPROM memory for the card’s attribute memory space.
The third party software solutions such as AWARD Software’s
CardWare™ system and the SCM’s Flash File System (FFS),
enables Atmel’s Flash Memory Card to emulate 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 Formatter are
also available. The Atmel Driver and Formatter utilizes a self-
contained spare sector replacement algorithm, enabled by At-
mel’s small 512-byte sectors, to achieve long term card
reliability and endurance.
Block Diagram
VCC
D0-D15
D8-D15
R
R
WE
D0-D7
I/O
OE TRANSCEIVERS WE
WP
AND BUFFERS
WP
OE
VCC
SYSTEM
A0
A1-A22
CE2
CE1
REG
WRITE
PROTECT
SWITCH
DEVICE
A0-A18
ADDRESS
BUFFERS
AND
DECODERS
CEH0-
CEH7
CEL0-
CEL7
R RR
VCC
CD1
CD2
CE OE WE
ATTRIBUTE
MEMORY
D0-D7 A0-A10
CARD DETECT
BVD1
BVD2
GND
VCC
VCC
BATTERY VOLTAGE
DETECT
AT29C040
A0-A18
D0-D7
CE
WE
S0
OE
VSS VCC
A0-A18
D0-D7
CE
S2
WE
OE
VSS VCC
A0-A18
D0-D7
CE
S14
WE
OE
VSS VCC
AT29C040
A0-A18
D8-D15
CE
S1
WE
OE
VSS VCC
A0-A18
D8-D15
CE
S3
WE
OE
VSS VCC
A0-A18
D8-D15
CE
S15
WE
OE
VSS VCC
2
AT5FC008
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