MB85RC04PNF-G-JNERE1

Memory IC Overview

The MB85RC04PNF-G-JNERE1 is a 4 Kbit (512 words x 8 bits) Ferroelectric Random Access Memory (FeRAM) integrated circuit manufactured by RAMXEED. It utilizes an I2C serial interface with a maximum operating frequency of 400 kHz. The device operates within a supply voltage range of 2.7 V to 3.6 V and supports an ambient temperature range from -40 °C to +85 °C. It is housed in an 8-pin plastic SOP package.

Memory IC Feature Summary

• Nonvolatile memory retains data without backup power, eliminating the need for battery support.
• High write endurance of at least 10^12 cycles per byte significantly exceeds other nonvolatile memory types.
• I2C interface allows direct connection to multiple slave devices on a single bus without polling sequences after writing.
• Hardware write protection via the WP pin disables write operations while maintaining read access.

Memory IC Applications

• Data logging systems requiring high endurance and low standby current
• Embedded controllers utilizing I2C communication protocols
• Industrial equipment operating within extended temperature ranges

Memory IC Procurement Notes

Verify the specific ordering suffix JNERE1 corresponds to the embossed carrier tape packaging format. Confirm that the required quantity aligns with the standard shipping unit of 1500 units per reel. Ensure the design accommodates the 8-pin SOP physical dimensions and lead pitch specifications provided in the datasheet.

Memory IC Selection Notes

Select this component when a nonvolatile memory solution requires high write endurance and fast write speeds without programming wait times. The I2C interface simplifies system architecture by reducing pin count compared to parallel interfaces. Verify that the 2.7 V to 3.6 V supply voltage range matches the target system's power rails.

Memory IC Part Context

This part belongs to the MB85RC series of FeRAM devices produced by RAMXEED, formerly Fujitsu Semiconductor Memory Solutions Limited. The series maintains original part numbering conventions while transitioning manufacturing and support under the new corporate entity. The technology relies on ferroelectric process and silicon gate CMOS processes for nonvolatile cell formation.

Memory IC Replacement Considerations

MB85RC04PNF-G-JNE1

Memory IC FAQ

Does the MB85RC04 require an acknowledge polling sequence after writing?

No, the device does not require acknowledge polling because it performs high-speed write operations immediately upon receiving the stop condition.

How many devices can be connected to the same I2C bus?

Up to four MB85RC04 devices can be connected to the same data bus using the A1 and A2 address pins to assign unique device addresses.

What is the default state of the Write Protect (WP) pin if left unconnected?

The WP pin is internally pulled down to VSS, so an open pin state is recognized as the 'L' level, which enables write operations.