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Overview The
DiskOnChip-Millennium, a member of M-Systems' DiskOnChip
family of products, is a monolithic solid-state flash disk available
in a standard 32-pin DIP or TSOP package. The
DiskOnChip-Millennium products are optimized for use in
Information Appliances, Set Top Boxes, Thin client or Network
Computers, Thin Server, Embedded and portable PC-compatible
computers that require minimal weight, space and power consumption,
providing a very attractive alternative to conventional hard and
floppy disk drives.
Using the TrueFFS® technology, the DiskOnChip-Millennium
provides full flash file system, which delivers full hard disk
emulation. It enables fast and easy adaptation into the major
operating systems in the market, as well as to non-standard
operating systems.
These qualities ensure faster time to
market and deliver the most cost effective solution.
Designed into more then 400 standard embedded motherboards
the DiskOnChip family provides high reliability low cost low power
and high capacity Flash disk solutions.
The
DiskOnChip-Millennium can be plugged into a standard DIP
socket or soldered directly onto the mother-board, eliminating the
need for mechanical disk drives, bulky ribbon cables and connectors.
The monolithic design of the DiskOnChip-Millennium ensures
high reliability even when subjected to levels of shock, vibration
and temperature changes which would destroy a conventional magnetic
disk drive system.
Designed for ease of use and minimal
integration overhead, the DiskOnChip-Millennium DIP is
shipped as a plug-and-play device, meaning that it is programmed and
formatted during production. Future software upgrades and formatting
can be done on the target platform. There is no need to remove the
DiskOnChip-Millennium from its socket in order to modify its
contents or to reformat it.
Applications
- Embedded Systems
- Internet Access Devices
- Set-Top Box or WebTV, Web-Browser
- WBT, Thin Client, Network Computer
- Routers, Networking
- Web-Phones, Car-PC, DVD, HPC
- Point Of Sale, Industrial PC's
- Telecom, Medical
TrueFFS® Technology For emulating a hard
disk interface, Flash Disk requires software management layer.
M-Systems developed TrueFFS, the patented Flash File System
management technology that allows flash components to fully emulate
a hard disk. Just read and write like any other hard disks. TrueFFS
Software simplifies and enhance Flash memories by:
- Using Third generation wear leveling - wear leveling ensures
that all blocks are erased an equal number of times, which
increases the life of the product by orders of magnitude.
- Using virtual blocking of the flash device to make the large
erase blocks transparent to the operator.
- Automatically mapping bad blocks
- Implementing a robust power-loss recovery mechanism to
guarantee absolute protection of data.
High
Reliability The DiskOnChip-Millennium can be
plugged into a standard 32 pin DIP socket or soldered directly onto
the motherboard, eliminating the need for mechanical disk drives,
bulky ribbon cables and connectors. The monolithic design of the
DiskOnChip-Millennium ensures high reliability even when
subjected to levels of shock, vibration and temperature changes
which would destroy a conventional magnetic disk drive.
Specifications
Compatibility
Full hard disk
emulation.
Host OS
Support
DOS 3.3 and up, Windows 3.1
Windows 95/98,
Windows CE, Windows NT,
QNX, VxWorks, pSOS, Linux and
others
DiskOnChip-OSAK provides support for O/S-less.
Capacities
8MB (with future models planned
for 16MB and up).
Up to four DiskOnChip-Millennium TSOP
devices can be cascaded in parallel, with no additional glue-logic,
to form a 16, 24 and 32MB flash disk.
Performance
| Write rate |
550KByte/sec |
| Read rate |
1.4Mbyte/sec |
| Burst Transfer Rate |
13.3Mbyte/sec |
Supply
Voltage
Single source 3.3V or 5V
Current
Consumption
Standby 60µ A (typical), 100µ A (Max)
Active
25mA (typical), 44mA (Max)
Package Type
Standard
32-pin DIP or TSOP-II packages
Package
Dimensions
MD-2800 32-pin DIP 42.5(L) x 15.24W) x
4.8mm(H)
MD-2810 32-pin TSOP-II 21.35(L) x 11.96(W) x 1.2mm(H)
Operating Temp.
0°C - +70°C (Commercial) -
1,000,000 Write/Erase cycles
-40°C - +85°C (Extended) - 300,000
Write/Erase cycles
Storage Temp.
-55°C - +150°C
Humidity
10% - 90% relative, non condensing
EDC/ECC
Corrects up to two10-bit symbols or single
bursts up to 11 bits.
Detects single bursts up to 31 bits, double
bursts up to 11 bits or Up to 4 random bit errors per 512 bytes.
Package Description and Pin List
 
Pin List
| Pin
Name |
Description |
Direction |
| A[12:0] |
Address bus. |
Inputs |
| D[7:0] |
Data bus. |
I/O |
 |
Chip Enable,
active low. |
Input |
 |
Output Enable,
active low. |
Input |
 |
Write Enable,
active low. |
Input |
| SYS_5V |
Connect to Vcc
for 5V systems or to GND for 3.3V systems (TSOP
only). |
Input |
| RSTIN |
Reset input,
active low (TSOP only). |
Input |
 |
Open drain,
active low output indicates that the
DiskOnChip-Millennium is initializing and should not be
accessed (TSOP only). |
Output |
| ID[1:0] |
Configuration
control inputs to support multiple chips connected in parallel
using same memory window (TSOP only).
First chip -
ID1, ID0 = GND, GND (0,0) ;also use for one chip
only
Second chip - ID1, ID0 = GND, VCC (0,1)
Third chip
- ID1, ID0 = VCC, GND (1,0)
Fourth chip - ID1, ID0 = VCC,
VCC (1,1)
|
Inputs |
| NC |
No connection. These pins may be left floating,
tied to Vcc, GND, or logic
levels. Absolute Maximum Ratings must be
observed. |
|
| RESERVED |
These pins are
reserved for future expansion and must be left floating.
(TSOP only). |
|
| VCC |
Power. All VCC
pins must be connected. |
|
| GND |
Ground |
|
Ordering
Information
DiskOnChip and TrueFFS are registered
trademarks of M-Systems. All other trademarks are the properties of
their respective owners. The DiskOnChip and TrueFFS technologies are
protected by U.S. and foreign patents, and by copyrights and other
applicable intellectual property rights. The information in this
document is subject to change without notice. M-Systems is not
responsible for typographical or other errors.
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