MB85RS64VPNF-G-JNERE1

Memory IC Overview

The MB85RS64VPNF-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) for communication and operates within a supply voltage range of 3.0 V to 5.5 V. The device supports a maximum clock frequency of 20 MHz and functions reliably across an ambient temperature range of -40 °C to +85 °C. It is housed in an 8-pin plastic SOP package with a lead pitch of 1.27 mm and is supplied in embossed carrier tape format.

Memory IC Feature Summary

• Nonvolatile memory architecture utilizing ferroelectric process technology that retains data without requiring a backup battery.
• High endurance capability supporting up to 10^12 read/write operations per byte, exceeding the limits of Flash and E2PROM technologies.
• Supports SPI Mode 0 and Mode 3 operation with automatic address increment capabilities during sequential read and write cycles.
• Integrated hardware protection mechanisms including block protect and write protect features controlled via the status register.

Memory IC Applications

• Data logging systems requiring frequent updates and high endurance
• Industrial control applications operating in extreme temperature environments
• Embedded systems needing fast write speeds without wait states

Memory IC Procurement Notes

Verify the specific ordering suffix JNERE1 to confirm the embossed carrier tape packaging configuration. Ensure compatibility with the required 8-pin SOP footprint and validate that the 3.0 V to 5.5 V operating voltage aligns with the target system power rails. Confirm moisture sensitivity level requirements for assembly processes.

Memory IC Selection Notes

Select this component when high cycle endurance and rapid write access are critical compared to traditional Flash or EEPROM alternatives. The SPI interface simplifies microcontroller integration, while the wide voltage tolerance accommodates various logic levels. Consider the thermal performance characteristics if the application involves sustained high-temperature operation.

Memory IC Part Context

This part belongs to the MB85RS64V series of FeRAM devices from RAMXEED, formerly Fujitsu Semiconductor Memory Solutions Limited. The series offers nonvolatile storage solutions designed to replace SRAM, Flash, and E2PROM in applications demanding superior write speed and longevity. The MB85RS64VPNF-G-JNERE1 specifically denotes the version packaged in embossed carrier tape for automated surface-mount assembly.

Memory IC Replacement Considerations

MB85RS64PNF-G-JNE1

Memory IC FAQ

How does the HOLD pin function during serial communication?

The HOLD pin allows interruption of serial input/output without deselecting the chip. When held low, SO becomes High-Z and SCK/SI inputs become don't care, preserving the command state until the pin returns high.

What is the mechanism for protecting data writes?

Write protection is managed through the Status Register using WPEN, WP, and BP bits. These settings can lock specific memory blocks or the entire array against unintended modification.