256Mbit FCRAM Ideal for Digital TVs, Camcorders, and Other Digital
SUNNYVALE, Calif., July 1 /CNW/ -- Fujitsu Microelectronics America, Inc.
(FMA) today introduced a new 256Mbit consumer FCRAM featuring very low power
and high throughput for digital consumer electronics products.
The new MB81EDS256545 runs on 1.7V to 1.95V and is ideal for
system-in-package (SiP) designs that feature small mounting spaces on circuit
boards and reduced component costs. A 64-bit I/O, low-power DDR SDRAM
interface enables data transfer rates equivalent to two DDR2 SDRAMs with
16-bit I/O. The new FCRAM reduces power consumption by a maximum of
approximately 1 watt (1W), which is equivalent to about 70 percent less power
than is required in typical implementations.
"The latest generation of consumer electronics products requires very low
power consumption in order to reduce heat and operate efficiently," said Tong
Swan Pang, senior product marketing manager at Fujitsu Microelectronics
America. "This new consumer FCRAM is designed specifically to deliver the
performance, high integration and low power that digital televisions,
camcorders, and other consumer products require."
Wide I/O Bus Enables Low Operating Frequency; Dropping Resistors Reduce
DDR2 SDRAM and other high-speed memory interfaces require a termination
resistor to maintain stable signals. These resistors are responsible for much
of the total power consumption in such applications. The new FCRAM eliminates
the need for resistors by using a wide 64-bit I/O bus, so that it can run at a
lower operating frequency. The result is performance equivalent to two 16-bit
DDR2 SDRAMs with 16-bit I/O interfaces, with about one full Watt less total
power consumption. This equates to a 70 percent reduction compared with prior
requirements, as shown in Figure 1 below. The power consumption comparison is
based on a continuous data transfer of 3.2 GBps using one unit of the new
consumer FCRAM and two DDR2 SDRAMs. A significant proportion of the DDR2
SDRAM's total power consumption has been accounted for by the terminating
resistors; eliminating them makes a significant contribution to power savings.
With a 64-bit-wide I/O and operating frequencies up to 216MHz, this
product has a maximum data transfer rate of 3.46 gigabytes per second
(3.46GBps), double that of typical DDR2 SDRAM. This makes it well-suited for
processing of image/video data and other data types that require high
bandwidth, such as digital television.
Fujitsu Microelectronics has a long history of developing leading-edge
FCRAM technology. The company expects that the new FCRAM can replace
conventional RAMs for use in digital consumer electronics, and that it will
provide solutions with excellent product value while reducing overall costs.
Pricing and Availability
Samples of the new MB81EDS256545 FCRAM are available now for $10 each. In
addition to being offered in a wafer format for SiP integration, FML's new
FCRAM is also offered as a wafer-level package (WLP).
MB81EDS256545 Key Specifications
Organization 1M-word x 64-bit x 4-bank
Supply Voltage 1.7V to 1.95V
Burst Operating Frequency 216MHz (Max)
Data Transfer Rate 3.46GByte/s (Max)
Clock Access Time 4.6ns (Max)
Operating Current (Burst Read) 300mA (Max)
Deep Power Down Current 20microA (Max)
Figure 1: Power consumption comparison of new FCRAM vs. DDR2 SDRAM
Figure 2: Benefits of using new FCRAM with SiP
About Fujitsu Microelectronics America, Inc.
Fujitsu Microelectronics America, Inc. (FMA) leads the industry in
innovation. FMA provides high-quality, reliable semiconductor products and
services for the networking, communications, automotive, security and other
markets throughout North and South America. For product information, visit the
company web site at http://us.fujitsu.com/micro/fcram or address e-mail to
All company and other product names mentioned may be trademarks or
registered trademarks of their respective owners.
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