MB85RS64PNF-G-JNERE1

Memory IC Overview

The MB85RS64PNF-G-JNERE1 is a 64 Kbit (8 K x 8) Ferroelectric Random Access Memory (FeRAM) integrated circuit manufactured by RAMXEED. It utilizes a Serial Peripheral Interface (SPI) operating at a maximum frequency of 20 MHz and supports SPI modes 0 and 3. The device functions within an operating supply voltage range of 2.7 V to 3.6 V and operates across an ambient temperature range of -40 °C to +85 °C. It is housed in an 8-pin plastic SOP package and supplied in embossed carrier tape.

Memory IC Feature Summary

• Non-volatile memory architecture utilizing ferroelectric process technology for data retention without backup batteries.
• High endurance capability supporting up to 10^12 read/write operations per byte, exceeding Flash and E2PROM limits.
• Integrated write protection mechanisms including block protect and status register write protection via the WP pin.
• Supports hold operations to interrupt serial input/output without deselecting the chip.

Memory IC Applications

• Data logging systems requiring high endurance and fast write speeds.
• Industrial control applications needing non-volatile storage with low power consumption.
• Embedded systems utilizing microcontrollers equipped with SPI ports for slave memory expansion.

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required shipping form, as this part number denotes embossed carrier tape packaging. Confirm compatibility with the target system's voltage levels and temperature requirements before integration. Ensure adherence to moisture sensitivity handling procedures during assembly.

Memory IC Selection Notes

Select this component when a non-volatile memory solution requires high write endurance and fast access times compared to traditional Flash or EEPROM technologies. It is suitable for designs necessitating a standard SPI interface and operation within the 2.7 V to 3.6 V voltage range. Consider the 8-pin SOP package constraints for board layout and thermal management.

Memory IC Part Context

This component belongs to the MB85RS64 family of FeRAM devices from RAMXEED, formerly Fujitsu Semiconductor Memory Solutions Limited. The manufacturer continues to support existing products while maintaining original part numbering conventions. This specific variant is designed for surface-mount technology applications requiring reliable data storage in compact form factors.

Memory IC Replacement Considerations

MB85RS64PNF-G-JNE1

Memory IC FAQ

What are the supported SPI modes for the MB85RS64?

The device corresponds to SPI mode 0 (CPOL=0, CPHA=0) and SPI mode 3 (CPOL=1, CPHA=1).

How does the HOLD pin function during operation?

When the HOLD pin is at the 'L' level while CS is 'L', the device enters a hold state. Serial input/output is interrupted, SO becomes High-Z, and SCK/SI inputs become don't care, allowing temporary suspension of commands without deselecting the chip.