Quad SPI FRAM at 4Mbit capacity

February 19, 2016 // By Graham Prophet
Fujitsu’s ferroelectric RAM offers high speed non-volatile memory for networking, industrial computing and HMI applications. The company presents the MB85RQ4ML as the first-available Quad SPI FRAM device.

MB85RQ4ML incorporates 4 Mbit FRAM (Ferroelectric Random Access Memory) and Quad SPI interface. By using 4 bi-directional I/O pins, the Quad SPI FRAM device can reach a data transfer rate of 54 MByte per second at an operating frequency of 108 MHz. In this respect, MB85RQ4ML is over four times as fast as Fujitsu’s existing parallel 4Mbit FRAM device and outperforms 45 nsec parallel SRAM.

MB85RQ4ML comes in an SOP-16 package. In comparison to the company’s parallel devices of the same density, which are housed in TSOP-44 or TSOP-48 packages, MB85RQ4ML achieves a package size reduction of at least 50% as well as a pin count reduction of 60%. The low pin count of MB85RQ4ML contributes significantly to a simplified circuit routing on the PCB. As a result, the PCB space needed can be reduced.

Besides its high speed, MB85RQ4ML offers the usual FRAM characteristics such as non-volatility and high endurance of 10 trillion read/write cycles. Since power is not required to retain the data written in the memory, MB85RQ4ML can replace battery backed-up SRAMs. While the conventional memory architecture of embedded systems consists of a RAM and a non-volatile memory, MB85RQ4ML can, in many applications, replace both kinds of memory technologies and offer a unified memory technology in one chip.

MB85RQ4ML operates at a voltage range of 1.7 – 1.95V. As well as Quad SPI, single SPI interface is supported.

Fujitsu Electronics Europe; www.fujitsu.com/feeu

Fujitsu Electronics Europe (FEEU) in distribution

Fujitsu Electronics Europe GmbH entered the market as a global distributor on 1 January 2016. FEEU markets complex solutions developed in-house, by Fujitsu (and former Fujitsu) companies and third-party manufacturers. FEEU’s ‘best in class’ approach aims to ensure that customers only receive the best product in a segment. The key markets for FEEU are automotive, manufacturing and communications.