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Fujitsu Semiconductor Memory Solutions Limited has changed its name to RAMXEED Limited.

RAMXEED Limited will continue to offer and support existing products while maintaining Fujitsu's

part number unchanged.

Memory FeRAM

4M (512 K  8) Bit SPI

MB85RS4MLY(AEC-Q100 Compliant)



DESCRIPTION

MB85RS4MLY is a FeRAM (Ferroelectric Random Access Memory) chip in a configuration of 524,288

words  8 bits, using the ferroelectric process and silicon gate CMOS process technologies for forming

the nonvolatile memory cells. This product is specifically targeted for high-temperature environment such

as automotive applications.

MB85RS4MLY adopts the Serial Peripheral Interface (SPI).

The MB85RS4MLY is able to retain data without using a back-up battery, as is needed for SRAM.

The memory cells used in the MB85RS4MLY can be used for 1013 read/write operations, which is a significant

improvement over the number of read and write operations supported by Flash memory and E2PROM.

As MB85RS4MLY does not need any waiting time in writing process, the write cycle time of MB85RS4MLY

is much shorter than that of Flash memories or E2PROM.



FEATURES

• Bit configuration

: 524,288 words  8 bits

• Special Sector Region

: 256 words  8 bits

In this region, data storage after (by) three times reflow based on

JEDEC MSL-3 standard condition is guaranteed.

• Unique ID

• Serial Number

: 64 bits

In this region, data storage after (by) three times reflow based on

JEDEC MSL-3 standard condition is guaranteed.

• Serial Peripheral Interface

: SPI (Serial Peripheral Interfaces)

Correspondent to SPI mode 0 (0, 0) and mode 3 (1, 1)

• Operating frequency

: 50 MHz (Max)

• High endurance

: 1013 times / byte

• Data retention

: 50.4 years (+85 C)

13.7 years (+105 C)

4.2 years (+125 C) or more

Under evaluation for more than 4.2 years(+125 C)

• Operating power supply voltage : 1.7 V to 1.95 V

• Low power consumption

: Operating power supply current 3.5 mA (Max@50 MHz)

Standby current 340 A (Max)

• Operation ambient temperature range :  40 C to +125 C

• Package

: 8-pin plastic DFN 5mm  6mm

RoHS compliant

DS501-00068-3v0-E