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MB85RS256TYPNF-GS-BCERE1

MB85RS256TYPNF-GS-BCERE1

RAMXEED
FRAM (Ferroelectric RAM) Memory IC 256Kbit SPI 33 MHz 8-SOP
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Overview

The MB85RS256TYPNF-GS-BCERE1 is a 256Kbit ferroelectric random access memory (FRAM) chip organized as 32,468 words by 8 bits. It utilizes a high-speed SPI interface supporting clock frequencies up to 33 MHz and operates across a wide voltage range of 1.8V to 3.6V. Unlike standard EEPROM, FRAM offers high endurance of 10 trillion read/write cycles and fast data writing without the need for a polling sequence.

Why Choose This Part

This FRAM IC features virtually unlimited write endurance and high-speed write performance that matches the SPI bus speed. It operates with a low standby current of 50 uA and a sleep current of 12 uA, making it suitable for power-constrained applications. The device is rated for high-reliability operation in temperatures ranging from -40C up to 125C.

Applications

Industrial Data Logging
Continuous recording of sensor data and system states where frequent write cycles would wear out standard EEPROM.
Configuration Storage
Storing calibration parameters and user settings that must be preserved during power loss without a backup battery.
Metering Equipment
Smart meters requiring fast, non-volatile recording of consumption data at high intervals.

Key Specifications

Technology FRAM (Ferroelectric RAM)
Memory Size 256Kbit
Memory Type Non-Volatile
Memory Format FRAM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 33 MHz
Memory Interface SPI
Voltage - Supply 1.8V ~ 3.6V
Memory Organization 32K x 8
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 8-SOP

Getting Started

To interface with this device, configure your MCU SPI master for Mode 0 or Mode 3. Use standard SPI commands such as WREN (06h) and WRITE (02h) to store data; no write-cycle delays or page-buffer management is required. Ensure the VDD supply is within the 1.8V to 3.6V range and include a 0.1 uF decoupling capacitor near the VDD pin.

MB85RS256TYPNF-GS Family

Also available as: MB85RS256TYPNF-GS-BCE1

Also Consider

CY15B256J-SXE IFXInfineon Technologies - An alternative 256Kbit SPI Excelon FRAM optimized for high-reliability automotive and industrial environments.
FM25V02A-GTR IFXInfineon Technologies - Offers similar 256Kbit density with a slightly higher maximum clock frequency of 40 MHz.
MR25H256ACDF Everspin Technologies - An MRAM alternative offering high-speed non-volatile performance if radiation hardness or magnetic immunity is a specific design concern.