PCMCIA Flash Memory Card
FLV Series
PCMCIA Flash Memory Card
General Description
WEDC鈥檚 FLV Series Flash memory cards offer high density
linear Flash solid state storage solutions for code and data
storage, high performance disk emulation and execute in
place (XIP) applications in mobile PC and dedicated
(embedded) equipment.
FLV series cards conform to the PCMCIA international
standard
The card鈥檚 control logic provides the system interface and
controls the internal Flash memories. The card can be
read/written in byte-wide or word-wide mode which allows
for flexible integration into various systems. Combined with
file management software, such as Flash Translation Layer
(FTL), FLV Flash cards provide removable high-
performance disk emulation.
The FLV series offers low power modes controlled by
registers. Cards contain separate 2kB EEPROM memory for
Card Information Structure (CIS) which can be used for easy
identification of card characteristics.
The WEDC FLV series is based on Intel/Sharp Flash
memories.
Note:
Standard options include attribute memory.Cards
without attribute memory are available. Cards are also
available with or without a hardware write protect switch.
1 MEGABYTE through 40 MEGABYTE (Intel/Sharp based)
Features
鈥?/div>
Low cost High Density Linear Flash Card
鈥?Supports 3V or 5V only systems
鈥?x8/ x16 Data Interface
鈥ased on Intel/Sharp FlashFile Components
鈥ast Read Performance
- 150ns @ 5V
- 200ns @ 3.3V
鈥?High Performance Random Writes
- 8碌s Typical Word Write Time @ 5V
- 17碌s Typical Word Write Time @ 3.3V
鈥?Automated Write and Erase Algorithms
- Command User Interface
鈥?100,000 Erase Cycles per Block
鈥?64K word symmetrical Block Architecture
鈥?PC Card Standard Type I Form Factor
Architecture Overview
WEDC鈥檚 FLV series is designed to support from 2 to 20 of 4Mb, 8Mb or 16MB components, providing a wide
range of density options. Cards are based on the 28F004SC (4Mb), 28F008SC (8Mb) and 28F016SC (16Mb)
devices for 3.3V or 5V only applications. Devices codes for the 28F004SC, 28F008SC and the 28F016SC are: A7H,
A6H and AAH respectively. Systems should be able to recognize all three codes. Cards utilizing the 8Mb
components provide densities ranging from 2MB to 20MB in 2MB increments, cards utilizing 16Mb components
provide densities ranging from 4MB to 40MB in 4MB increments. 4 Mbit memory devices are used only for
smallest capacity cards (1MB).
In support of the PC Card 95 standard for word wide access, devices are paired. Therefore, the Flash array is
structured in 64K word (128kBytes) blocks. Write, read and block erase operations can be performed as either a
word or byte wide operation . By multiplexing A0, CE1# and CE2#, 8-bit hosts can access all data on data lines
DQ0 - DQ7.
The FLA21-FLA28 series also supports the following PCMCIA compatible register functions: Soft Reset via the
Configuration Option Register, Power Down (sleep mode) via the Configuration and Status Register and
monitoring of Ready/Busy, Soft Reset and Power Down via the Card Status Register (cards without attribute
memory do not have registers).
The FLV series cards conform to the PC Card (PCMCIA) and JEIDA standards, providing electrical and physical
compatibility. The PC Card form factor offers an industry standard pinout and mechanical outline, allowing density
upgrades without system design changes.
WEDC鈥檚 standard cards are shipped with WEDC鈥檚 Logo. Cards are also available with blank housings (no Logo).
The blank housings are available in both a recessed (for label) and flat housing. Please contact your WEDC sales
representative for further information on Custom artwork.
August 2000 Rev. 4 - ECO #13133
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