# Adafruit SPI Non-Volatile FRAM Breakout - 2 Mbit / 256 KBytes - MB85RS2MTA

**Type:** Product page · **SKU:** ADA4718 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/adafruit-spi-non-volatile-fram-breakout-2-mbit-256-kbytes-mb85rs2mta.html ([markdown](https://core-electronics.com.au/adafruit-spi-non-volatile-fram-breakout-2-mbit-256-kbytes-mb85rs2mta.html.md))

FRAM, or Ferroelectric Ram, is the coolest new data storage method that all the fashion magazines are talking about. Oh wait, no that's quilted handbags. But FRAM is pretty damn cool too! It's similar to Dynamic random-access memory, only with a ferroelectric layer instead of a dielectric layer. This gives it stable handling (the bytes you write are non-volatile) with dynamic responsiveness (you can write them very fast!). This particular FRAM chip has 2 Megabits (256 KBytes) of storage

## Pricing

- **Price:** $22.35 (inc GST) — $20.32 AUD, exc GST
- **Quantity discounts:** 10+ $19.71 (exc GST) · 50+ $19.30 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## Description

FRAM, or Ferroelectric Ram, is the coolest new data storage method that all the fashion magazines are talking about. Oh wait, no that's quilted handbags. But FRAM is pretty damn cool too! It's similar to [Dynamic random-access memory](https://en.wikipedia.org/wiki/Dynamic_random-access_memory), only with a ferroelectric layer instead of a dielectric layer. This gives it stable handling (the bytes you write are non-volatile) with dynamic responsiveness (you can write them very fast!)

Now, with Adafruit's SPI FRAM breakout board you can add some FRAM storage to your next DIY project. FRAM allows for a lower power usage and a faster write performance. It's excellent for low-power or inconsistent-power datalogging or data buffering where you want to stream data fast while also keeping the data when there's no power. Unlike Flash or EEPROM there's no pages to worry about. Each byte can be read/written 10,000,000,000,000 times so you don't have to worry too much about wear leveling.

**This particular FRAM chip has 2 Megabits (256 KBytes) of storage**, interfaces using SPI, and can run at up to 40 MHz clock rates. Each byte can be read and written instantaneously (like SRAM) but will keep the memory for 95 years at room temperature.

Adafruit have put this handy magnetic marvel onto a breakout board with 3.3V logic level shifting and regulator so that tou can use this chip with either 3V or 5V power and logic. It comes in a breadboard-friendly breakout and bit of standard 0.1" header.

Looking for something with more byte? Check out the [4 MBit / 512 KBytes breakout](https://core-electronics.com.au/adafruit-spi-non-volatile-fram-breakout-4-mbit-512-kbytes-mb85rs4mt.html). Or, on the other hand, if you need a smaller breakout Adafruit have the [64Kbit / 8KByte SPI FRAM breakout board](https://core-electronics.com.au/adafruit-spi-non-volatile-fram-breakout-64kbit-8kbyte.html). Additionally, They also have an [I²C FRAM breakout board](https://core-electronics.com.au/adafruit-i2c-non-volatile-fram-breakout-256kbit-32kbyte.html), larger in size but slower (1MHz max I²C clock rate).

[Check out their FRAM usage guide for schematics, diagrams, datasheets and example code for Arduino and CircuitPython and Python.](https://learn.adafruit.com/adafruit-spi-fram-breakout)

**Technical Specifications**

- Bit configuration: 262,144 words x 8 bits
- Serial Peripheral Interface: SPI (Serial Peripheral Interface)
- Correspondent to SPI mode 0 (0, 0) and mode 3 (1, 1)
- Operating frequency: 40MHz Max
- High endurance: 10^13 times / byte - that's 10,000,000,000,000 times!
- Data retention: 10 years (at +85 °C), 95 years (at +55 °C), or over 200 years (at +35 °C)
- Low power consumption: Operating power supply current 2.6mA (Max @ 40 MHz)
- Operation ambient temperature range : -40 °C to +85 °C
- [Datasheet](https://core-electronics.com.au/attachments/localcontent/4718_MB85RS2MTA_172124aaa93.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/4/7/4718-00_2.jpg)