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MB85RC256VPNF-G-JNERE1

MB85RC256VPNF-G-JNERE1

RAMXEED
FRAM (Ferroelectric RAM) Memory IC 256Kbit I2C 1 MHz 550 ns 8-SOP
Obsolete
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Overview

The MB85RC256VPNF-G-JNERE1 is a 256Kbit ferroelectric random access memory (FRAM) IC utilizing an I2C interface and operating at clock frequencies up to 1 MHz. Unlike standard EEPROM, this non-volatile memory offers high-speed write endurance and does not require a polling sequence after write cycles, making it ideal for frequent data logging. It operates across a wide voltage range of 2.7V to 5.5V with extremely low power consumption, requiring only 0.2mA at 1MHz.

Why Choose This Part

This FRAM device eliminates the write-delay overhead associated with EEPROM, allowing for 550ns access times and immediate data persistence. It features high endurance for write cycles and operates with a low run current of 0.13mA at 400kHz, making it suitable for battery-powered or energy-constrained applications. The 8-SOP package and standard I2C interface ensure easy integration with most microcontrollers.

Applications

Continuous Data Logging
Ideal for systems that must frequently record sensor data where the limited write endurance of EEPROM or Flash would lead to premature device failure.
Configuration Storage
Used to store system parameters that require immediate updates and persistence through power loss without the delay of a write-cycle buffer.
Smart Metering
Records energy consumption data in real-time, benefiting from the high-speed write capabilities and low power standby current of 27uA.
Industrial Process Control
Stores state variables and machine coordinates in environments where power stability is not guaranteed and data must be saved instantly.

Key Specifications

Technology FRAM (Ferroelectric RAM)
Access Time 550 ns
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 1 MHz
Memory Interface I2C
Voltage - Supply 2.7V ~ 5.5V
Memory Organization 32K x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOP

Getting Started

To evaluate this part, connect the SDA and SCL lines to any I2C-capable microcontroller and provide a supply voltage between 2.7V and 5.5V. Since it behaves like an I2C EEPROM but without the write-time delay, you can use standard I2C libraries and remove any 'delay' or 'polling' code usually required after a write command. Ensure the 1.27mm pitch 8-SOP footprint is correctly mapped in your PCB CAD tool for surface mounting.

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