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Renesas rolls out large-capacity FIFO memory modules

Posted: 29 Jun 2005 ?? ?Print Version ?Bookmark and Share

Keywords:fifo? memory? w-cdma?

Renesas rolls out large-capacity <a href="../"><span class="maintext">FIFO</span></a> <a href="../"><span class="maintext">memory</span></a> modules

Renesas Technology Corp. has announced two large-capacity 8Mb FIFO (First-In First-Out) memory models - the 100-pin R8A66120FFP and 48-pin R8A66120FFA - with a fast operating speed of 100MHz for use in W-CDMA and similar base stations, OA equipment such as color copiers, and digital home electronics appliances. Sample shipments will begin in August 2005 for the R8A66120FFP, and on May 23, 2005 for the R8A66120FFA in Japan.

Product Background

FIFO memory employs a first-in first-out method in which data is read in the order in which it was written, and is suitable for use when processing regular continuous data such as voice and image data.

Applications include W-CDMA and similar mobile phone base stations, and OA equipment such as color copiers and scanners, with FIFO memory being used in the voice signal processing unit of the baseband card or control card in a base station, and in the image signal correction processing circuit of the image reading unit in a color copier or similar device, for example.

Meanwhile, base stations for recent third-generation (3G) mobile phones are increasing in number in response to growing numbers of subscribers and the need for extended call areas, and faster processing of communication data is required of base stations. At the same time, devices such as color copiers and scanners are being used in more and more homes, and there is a need for higher reading precision - a trend that will continue. To meet these demands, FIFO memory needs to offer larger capacities, higher speeds, higher functionality, and lower power consumption.

In response to this market need, Renesas Technology has extended its FIFO memory lineup with the development of the R8A66120FFP and R8A66120FFA synchronous FIFO memory models offering large capacity of 8Mb and high speed 100MHz operation.

Product Features

In comparison with Renesas Technology's current 6Mb M66288FP, these two new models offer increased memory capacity, improved performance through higher speed, and greater ease of use through the provision of features such as a single 3.3 V power supply instead of dual power supplies.

Features of the R8A66120FFP and R8A66120FFA are as follows:

Large capacity and high-speed operation

Use of Renesas Technology's original memory cells and control circuitry have enabled memory capacity to be increased by approximately 30% from the 6Mb of the current Renesas product to 8Mb, and the maximum clock operating frequency to be speeded up by 25% from 80MHz to 100MHz. This not only enables systems to achieve higher functionality and faster processing, but also simplifies PCB board design through the use of a single 3.3 V power supply specification.

Flexible word count and bit width setting capability to suit different applications

The 100-pin R8A66120FFP incorporates a multifunction FIFO function that allows flexible switching of number of words (depth) x bit width (I/O bus width) according to the use and configuration of a particular system. The following three mode settings can be made.

This facility offers flexible support for a variety of applications according to the user's needs.

Small-package product for systems with a small mounting area (R8A66120FFA)

With the 48-pin R8A66120FFA greater emphasis is placed on the PCB board mounting area, and only one mode setting (mode 3) is offered. The small package size of 7 mm x 7 mm makes the R8A66120FFA ideal for use in devices requiring a small mounting area.

Renesas Technology plans to extend its FIFO memory lineup in the future with the development of products that offer a fast response to evolving market needs, and also to study the development of products such as SiP (System-in-Package) custom FIFO products including a standard SDRAM chip or custom chip in a single package.

Typical Applications

Communication equipment : W-CDMA and similar base stations, etc.

OA products : Color copiers, scanners, etc.

Digital home electronics appliances : Digital TVs, etc.

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