August 2000 Rev. 3 - ECO #13135
1
PCMCIA Flash Memory Card
FVB Series
PC Card Products
Features
Low cost Linear Flash Card
Single 5 Volt Supply
Based on AMD Flash Components
- very low power without entering reset mode
- allows standard access from low power mode
Fast Read Performance
- 150ns Maximum Access Time
x16 Data Interface
- Odd byte not accessible on Even byte
High Performance Random Writes
- 10s Typical Word Write Time
Automated Write and Erase Algorithms
- AMD Command Set
50A Typical Deep Power-Down
100,000 Erase Cycles per Block
64K word symmetrical Block Architecture
PC Card Standard Type I Form Factor
The WEDC Value Series (FV) Flash memory cards
offers a low cost linear Flash solid state storage
solution for code and data storage, high performance
disk
emulation,
mobile
PC
and
embedded
applications.
The WEDC FVB Value series is based on AMD
Flash memories. Current cards are based on the
AMD 29F016 (2MB) device whose manufacturer
and device code is 01 and ADH respectively. The
symmetrically blocked architecture and single 5V
operation
provides
a
cost
effective,
high
performance, nonvolatile storage solution. The PC
Card form factor offers an industry standard pinout
and mechanical outline, allowing density upgrades
without system design changes.
The Value series is designed as a simple x16 linear
array of Flash devices. Two Flash devices in parallel
provide the lower and upper bytes for the 16 bit
access. The Value series does not provide access of
the ODD byte (D8 - D15) on the even byte data path
(D0 - D7).
WEDC’s standard Value Series Flash Card is
shipped with no attribute memory or CIS (Card
Information Structure) information. An option for
2KB of attribute memory with CIS information is
available. The CIS for the WEDC Value series may
also be stored in Block 0 (even bytes, D0 - D7 only)
of the Flash memory, this option is available by
request only.
WEDC’s standard cards are shipped with WEDC
Logo. Cards are also available in blank housings (no
Logo). The blank housings are available in both a
recessed (for label) and flat housing. Please contact
WEDC sales representative for further information
Custom artwork.
Value Series Flash Memory Card (AMD based)
4, 8, 16 MEGABYTE
Block Diagram
DATA
D0-7
DATA
D8-15
ADDRESS BUS A1-A21
ATTRIBUTE
MEMORY
28C16
CONTROL
LOGIC
CE1#
CE2#
REG#
WE#
OE#
A22
A23
Device 1
Device 3
Device 5
Device 7
Device 0
Device 2
Device 4
Device 6
Vpp1
Vpp2
VS1
VS2
open
/WR
/RD
R/Busy
Busy 0-7
Note: Configuration above for 16MB card using 16Mbit
components.
General Description