MB85RC256TYPNF-G-BCE1

Memory IC Overview

The MB85RC256TYPNF-G-BCE1 is a 256Kbit (32 K x 8) Ferroelectric Random Access Memory (FeRAM) IC manufactured by RAMXEED. It features an I2C serial interface supporting Standard, Fast, Fast Mode Plus, and High Speed modes with clock frequencies up to 3.4 MHz. The device operates on a power supply voltage ranging from 1.8 V to 3.6 V and functions within an ambient temperature range of -40°C to +125°C. It utilizes an 8-pin plastic SOP package in tube shipping format.

Memory IC Feature Summary

• Nonvolatile memory cells retain data without backup batteries and offer high write endurance.
• I2C two-wire serial interface allows connection of multiple devices with unique address codes.
• High-speed write operations eliminate the need for acknowledge polling sequences after writing.
• Includes hardware write protection via the WP pin and software-based sleep mode for low power consumption.

Memory IC Applications

• Data logging systems requiring frequent write cycles
• Industrial control equipment operating in wide temperature ranges
• Automotive electronics compliant with extended thermal specifications
• Smart metering and utility infrastructure

Memory IC Procurement Notes

Verify the specific ordering suffix BCE1 corresponds to the 8-pin plastic SOP tube packaging configuration. Confirm that the required operating voltage aligns with the 1.8 V to 3.6 V specification range. Ensure the design supports the I2C bus protocol requirements, including pull-up resistors for the SDA and SCL lines. Check for moisture sensitivity level 3 handling requirements during assembly.

Memory IC Selection Notes

Select this component when nonvolatile storage with high endurance and fast write speeds is required without polling overhead. It is suitable for applications needing operation at temperatures up to +125°C. Choose this part over EEPROM or Flash if write cycle life is a critical constraint. Ensure the system can accommodate the I2C interface timing constraints for High Speed Mode if maximum throughput is needed.

Memory IC Part Context

This part belongs to the MB85RC256TY family of FeRAM devices produced by RAMXEED Limited, formerly Fujitsu Semiconductor Memory Solutions Limited. The manufacturer continues to support existing products while maintaining original part numbering conventions. The technology combines ferroelectric process with silicon gate CMOS for nonvolatile memory cell formation.

Memory IC Replacement Considerations

MB85RC256TYPNF-G-BCERE1 (Same device, embossed carrier tape packaging)

Memory IC FAQ

Does the MB85RC256TYPNF-G-BCE1 require acknowledge polling after write operations?

No, the device performs high-speed write operations, so no waiting time for ACK polling occurs after issuing the Stop Condition.

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

Up to eight devices can be connected to the same data bus, identified by unique combinations of the A0, A1, and A2 address pins.

What is the function of the WP pin?

The Write Protect (WP) pin disables writing operations when set to the 'H' level. When open or set to 'L', the entire memory region can be overwritten, though reading remains enabled regardless of the pin state.