MB85RS256TYPNF-GS-BCE1

Memory IC Overview

The MB85RS256TYPNF-GS-BCE1 is a 256 Kbit Ferroelectric Random Access Memory (FeRAM) IC manufactured by RAMXEED. It features a 32 K x 8 bit organization and utilizes a Serial Peripheral Interface (SPI) compatible with Mode 0 and Mode 3. The device operates within a supply voltage range of 1.8 V to 3.6 V and supports maximum clock frequencies of 33 MHz at lower voltages and 40 MHz at higher voltages. It is housed in an 8-pin plastic SOP package and is compliant with AEC-Q100 Grade 1 standards, ensuring functionality across an ambient temperature range of -40°C to +125°C.

Memory IC Feature Summary

• High endurance capability supporting up to 10^13 read/write operations per byte without degradation.
• Nonvolatile data retention that eliminates the need for backup batteries required by SRAM.
• Fast write cycle times due to the absence of waiting periods inherent in Flash or EEPROM technologies.
• Integrated low-power modes including standby and sleep states to minimize current consumption.

Memory IC Applications

• Automotive systems requiring high-temperature reliability and AEC-Q100 compliance
• Industrial control applications demanding frequent data logging and high endurance
• Embedded systems needing battery-free nonvolatile memory storage

Memory IC Procurement Notes

Verify the specific ordering suffix corresponds to the tube packaging format indicated by BCE1. Confirm that the component meets RoHS directives and REACH regulations for your region. Ensure the design accounts for Moisture Sensitivity Level 3 requirements during assembly. Check for any Product Change Notifications regarding manufacturing site updates from Fujitsu Semiconductor Memory Solutions Limited to RAMXEED Limited.

Memory IC Selection Notes

Select this component when high-speed SPI communication and extreme durability are required. It is suitable for environments where standard Flash memory wear-out limits would be exceeded. Consider the 1.8 V to 3.6 V operating range for power supply compatibility. The AEC-Q100 certification makes it appropriate for automotive-grade designs requiring operation up to 125°C.

Memory IC Part Context

This part belongs to the MB85RS256TY series of FeRAM devices. RAMXEED Limited continues to offer and support existing products while maintaining the original part numbers previously associated with Fujitsu Semiconductor Memory Solutions Limited. The technology leverages ferroelectric process and silicon gate CMOS processes for nonvolatile memory cell formation.

Memory IC Replacement Considerations

MB85RS256BPNF-G-JNE1

Memory IC FAQ

What is the maximum operating frequency of the SPI interface?

The maximum operating frequency is 40 MHz when the supply voltage is between 2.7 V and 3.6 V. At voltages between 1.8 V and 2.7 V, the maximum frequency is limited to 33 MHz.

How does the device handle data retention at high temperatures?

Data retention is specified as at least 3.38 years at +125°C, 10.9 years at +105°C, and 40.2 years at +85°C.

Is the chip select pin internally pulled up?

Yes, the Chip Select (CS) pin is internally pulled up to the VDD pin.