Fujitsu has launched 2Mbit FeRAM with guaranteed operations up to 125℃

Optimal non-volatile memory for applications in automobiles and industrial robots that require high reliability in high-temperature environments


Fujitsu Semiconductor Limited announced the release of the 2Mbit FeRAM MB85RS2MTY, which has the largest density in the FeRAM products operating up to 125℃. Mass-produced products are currently available.

This is non-volatile memory which guarantees ten trillion read/write cycles across its full temperature range. This FeRAM product enables continuous frequent data logging such as driving data or positioning data in real time. In addition, written data can be protected due to non-volatility even if sudden power outages occur. Therefore, it is optimal for applications running in high temperature environments such as automotive equipment and industrial robots, which generate large amounts of heat with engines or motors.

MB85RS2MTY Package
Fig.1: Applications suited for MB85RS2MTY
Fig.2: Main features of MB85RS2MTY


For approximately 20 years, Fujitsu Semiconductor has mass-produced FeRAM non-volatile memory products featuring higher read/write endurance, faster writing speed operation and lower power consumption compared to EEPROM and flash memory. In recent years these products have been successfully adopted in wearable devices, industrial robots and drones.

This product with 2Mbit density features an SPI interface, a wide power supply voltage range from 1.8V to 3.6V and operating temperature up to 125°C. It offers guaranteed ten trillion read/write endurance, equivalent to 10 million times EEPROM's, even in environments of 125°C. The maximum operating frequency is now 50MHz, which is 1.5 times faster than existing products. Furthermore, the reliability testing for these products also complies with AEC-Q100 Grade 1, a qualification requirement for products to be called "automotive grade."

This FeRAM product is housed in an industry-standard 8-pin SOP package, making it easy to replace existing EEPROM products with a similar footprint. In addition, an 8-pin DFN (Dual Flatpack Non-leaded) package is available.

Fujitsu Semiconductor has been offering FeRAM products with higher data writing performance than EEPROM for IC cards, industrial machinery and consumer devices. Then, since mass-production of FeRAM products guaranteed to operate up to 125℃ started in 2017, the 125℃-operated FeRAM products are now increasing in the markets for automotive and industrial machinery requiring operation at high temperatures and with high reliability. This time Fujitsu Semiconductor has developed the largest density product of 2Mbit to strengthen its lineup of FeRAM product guaranteed operation up to 125℃.

Fujitsu Semiconductor will continue to offer FeRAM-based products and solutions to improve the value and convenience of customer applications.

Key Specifications

Part NumberMB85RS2MTY
Density(configuration)2Mbit (256K x 8bit)
InterfaceSPI (Serial Peripheral Interface)
Operating frequency50MHz (max.)
Operating voltage1.8V to 3.6V
Operating temperature range-40℃ to +125℃
Read/Write endurance10 trillion times (1013 times)
Package8-pin SOP, 8-pin DFN
Qualification standardAEC-Q100 Grade 1 compliant


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