MB85RS64TPNF-G-JNE2

Memory IC Overview

The MB85RS64TPNF-G-JNE2 is a 64 Kbit (8,192 words x 8 bits) Ferroelectric Random Access Memory (FeRAM) integrated circuit manufactured by RAMXEED. It utilizes the Serial Peripheral Interface (SPI) for communication and supports SPI modes 0 and 3 with a maximum operating frequency of 10 MHz. The device operates within a supply voltage range of 1.7 V to 3.6 V and functions in an ambient temperature range of -40 °C to +85 °C. It features high endurance of 10^13 read/write operations per byte and data retention exceeding 40 years at +85 °C. The component is housed in an 8-pin plastic SOP package.

Memory IC Feature Summary

• Nonvolatile memory architecture utilizing ferroelectric process technology that retains data without backup power.
• High endurance capability supporting 10^13 read/write cycles per byte, significantly exceeding Flash and E2PROM limits.
• Integrated SPI interface compatible with standard microcontroller connections, supporting Mode 0 and Mode 3.
• Configurable block protection and write protect mechanisms managed via the status register.

Memory IC Applications

• Data logging systems requiring frequent updates and long-term nonvolatile storage.
• Industrial control applications needing reliable memory operation across wide temperature ranges.
• Embedded systems utilizing SPI communication protocols for configuration or parameter storage.
• Battery-free memory solutions where low standby current consumption is critical.

Memory IC Procurement Notes

Verify the specific ordering suffix JNE2 corresponds to the tube shipping form when sourcing this component. Confirm the manufacturer designation as RAMXEED, noting the transition from Fujitsu Semiconductor Memory Solutions Limited. Ensure compatibility with the specified 8-pin SOP package dimensions and lead pitch during procurement planning.

Memory IC Selection Notes

Select this component for designs requiring high write endurance and fast access times without wait states typical of Flash memory. Consider the 1.7 V to 3.6 V operating voltage range for system power budgeting. Evaluate the 10 MHz maximum clock frequency against the host microcontroller's SPI capabilities. Verify that the 8-pin SOP package fits the available PCB footprint and mounting constraints.

Memory IC Part Context

This FeRAM device belongs to the MB85RS64T series produced by RAMXEED. The manufacturer continues to support existing products while maintaining original part numbering conventions established during the Fujitsu era. The technology combines ferroelectric memory cells with silicon gate CMOS processes to achieve nonvolatile storage characteristics.

Memory IC Replacement Considerations

MB85RS64TPNF-G-JNERE2