Data Sheet
January 2002
DiskOnChip
2000 DIP
MD2200/2/3
Features
Single-chip plug-n-play flash disk
Low power, single 3.3V or 5V power
supply
16MB to 576MB capacity (1GB in 2002)
Pinout and structure compatible with
DiskOnChip Millennium DIP 8MB
Simple, easy-to-integrate interface
32-pin DIP, JEDEC standard,
EEPROM-compatible pinout
8KB sized memory window
Boot OS capability
Embedded TrueFFS
software provides:
—
Full hard disk read/write emulation
—
Third-generation wear leveling
—
Automatic block management
Applications
Embedded systems
Operates with DiskOnChip SDK in
OS-less environments, ANSI-C source
code kit
Error Detection and Correction
(EDC/ECC) for higher data reliability
Low power consumption – Static
Operation
Broad OS support: DOS, Windows
NT4.0/5.0, Windows CE, BE, pSOS+,
QNX, VxWorks, and others
Compatible with major processors: x86,
MediaGX, Geode SCxxxx, PowerPC, 68K,
MIPS, SHx, StrongARM, and others
Internet access devices
Internet set-top boxes/ITV, Web browsers
WBT, thin clients, network computers
Routers, networking
Web phones, car PCs, DVD, HPC
Point of sale, industrial PCs
Telecom, medical
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DiskOnChip 2000 DIP
Table of Contents
1
2
General Description................................................................................................................... 4
Detailed Feature List.................................................................................................................. 5
TrueFFS Technology............................................................................................................................ 5
Low Power Consumption ..................................................................................................................... 5
Temperature Range ............................................................................................................................. 5
Easy to Integrate .................................................................................................................................. 6
Robust Error Correction ....................................................................................................................... 6
High Reliability...................................................................................................................................... 6
High Speed........................................................................................................................................... 6
Compatibility with 8MB DiskOnChip Millennium Series ....................................................................... 6
Broad Support for Operating Systems and Processors ....................................................................... 6
Portable Solution – Shorter Time to Market ......................................................................................... 7
Complete Solution ................................................................................................................................ 7
3
4
Package Description and Pin List ............................................................................................ 8
Designing with the DiskOnChip 2000 Flash Disk ................................................................... 9
4.1 Hardware.............................................................................................................................. 9
4.2 Software ............................................................................................................................... 9
4.3 Designing DiskOnChip 2000 into PC Architecture ............................................................... 9
5
Disk Capacities and Contents ................................................................................................ 11
5.1 Low-Profile ......................................................................................................................... 11
5.2 High-Profile......................................................................................................................... 11
5.3 Media Contents .................................................................................................................. 11
6
7
Theory of Operation................................................................................................................. 12
6.1 Error Detection and Correction (EDC/ECC) ....................................................................... 12
Specifications .......................................................................................................................... 13
7.1 Absolute Maximum Ratings................................................................................................ 13
7.2 Capacitance ....................................................................................................................... 13
7.3 Temperature Ranges ......................................................................................................... 13
7.4 DiskOnChip Assembly........................................................................................................ 13
7.5 Humidity ............................................................................................................................. 13
7.6 EDC/ECC ........................................................................................................................... 13
7.7 DC Electrical Characteristics over Operating Range.......................................................... 14
7.7.1 Vcc = 5V Characteristics...........................................................................................................14
7.7.2 Vcc = 3.3V Characteristics........................................................................................................15
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7.8 AC Operating Conditions.................................................................................................... 15
7.9 Timing Specifications ......................................................................................................... 16
7.9.1 Read Cycle Timing....................................................................................................................16
7.9.2 Write Cycle Timing ....................................................................................................................17
8
9
Mechanical Dimensions .......................................................................................................... 18
Shock and Vibration ................................................................................................................ 19
10 Ordering Information ............................................................................................................... 19
11 Additional Information............................................................................................................. 20
How to Contact Us .......................................................................................................................... 21
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DiskOnChip 2000 DIP
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General Description
The DiskOnChip 2000 product line is the second-generation of M-Systems’ DiskOnChip series of
products. The 2000 series provides a small, single-chip, solid-state flash disk in a standard 32-pin
DIP package. Combining a disk controller with flash memory on a single chip, DiskOnChip 2000 is
the
solution where minimal weight, space, and power consumption are essential. In consequence, the
2000 series finds use today in a wide range of products, such as information appliances, set-top
boxes, thin clients, thin servers, network computers, and embedded, portable computers.
By placing DiskOnChip 2000 in a standard socket, physical space requirements are reduced. Unlike
standard IDE drives, no cables or extra space are required. DiskOnChip 2000 has no moving parts,
resulting in significantly decreased power consumption and increased reliability. It is easy to use and
reduces integration overhead. DiskOnChip 2000 is therefore a very attractive alternative to
conventional hard and floppy disk drives.
Using TrueFFS technology, DiskOnChip 2000 delivers full hard disk emulation. As such, the design
and integration stages can be considerably reduced, thereby enabling very fast time-to-market and
ease of production. Combined with its very attractive cost structure, DiskOnChip 2000 is a superior
alternative to resident flash array (RFA).
DiskOnChip 2000 products are available in capacities ranging from 16MB to 576MB. In addition,
they are 100% pinout and software compatible with the DiskOnChip Millennium DIP 8MB package.
In future versions, the capacity will be dramatically increased (up to 1GB during 2002). Since the
same pinout will be retained, the socket on the target platform will not have to be changed to
accommodate the larger capacities.
DiskOnChip technology provides broad support for all major operating systems and processors in the
market, enabling it to be readily integrated with any architecture.
DiskOnChip 2000 is shipped as a plug-and-play device that is fully tested and formatted, and
programmed with a DOS driver. Future driver, software or content upgrades, or formatting, can be
made on-board or off-board using DiskOnChip utilities and accessories provided by M-Systems.
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Detailed Feature List
TrueFFS Technology
For a flash disk to emulate a hard disk, a software management layer is required. TrueFFS is
M-Systems’ patented flash file system management technology that allows flash components to fully
emulate hard disks, so they can be written to and read from like any other hard disk.
TrueFFS software simplifies and enhances flash memories by:
•
Using third-generation wear leveling, which ensures that all blocks are erased an equal number of
times. This increases the life of the flash media by orders of magnitude.
•
Using virtual blocking of the flash device to make erasure of large blocks transparent to the
operator.
•
Automatic block mapping.
•
Implementing a robust power-loss recovery mechanism to guarantee absolute protection of data.
•
Providing conventional address support for various architecture configurations.
•
The TrueFFS driver supports 8-bit, 16-bit, and 32-bit bus architectures. Support for the 16-bit and
32-bit bus architectures, typically used in RISC processors, can be achieved by using the LSB of
the data bus as follows:
For 16-bit address boundary shifts, shift the address lines by
one,
so that the host address line
A1 connects to DiskOnChip 2000 address line A0, the host address line A2 connects to
DiskOnChip 2000 line A1, and so on.
For 32-bit address boundary shifts, shift the address lines by
two,
so that the host address line
A2 connects to DiskOnChip 2000 address line A0, the host address line A3 connects to
DiskOnChip 2000 line A1, and so on.
Refer to Application Note AP-DOC-030 for more details.
Low Power Consumption
The internal functions are synchronized with the CPU’s read and write strobes. This innovation
eliminates the need for an external clock and dramatically reduces power consumption.
DiskOnChip 2000 requires only a single 3.3V or 5V power supply, which helps simplify integration.
These features make DiskOnChip 2000 the best cost/performance solution for computers that require
minimal weight, space, and power consumption, providing a very attractive alternative to
conventional hard and floppy disk drives.
Temperature Range
DiskOnChip 2000 is available in both commercial (0 ºC to +70 ºC) and extended (-40 ºC to +85 ºC)
temperature ranges.
* DiskOnChip 2000 192MB and 576MB capacities are available only for commercial temperature ranges.
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