Not quite - the chip the article refers to is the 47L04 [0], which is "just" NVSRAM built out of a RAM + EEPROM. I do agree on FeRAM being cool, though - I have a few I2C chips en route, and I can't wait to get my hands on them.

[0] https://www.microchip.com/en-us/product/47L04

You could also consider MRAM. Which is available in larger sizes - up to 4 Mbit on SPI bus in the MR20H40, and 128 Mbit in EM128LXQ (but it gets unreasonably expensive when this big).

https://www.everspin.com/family/mr20h40?npath=259

Thanks to both of you for bringing FRAM onto my radar!

FRAM is extremely neat on paper, combining SRAM ish speeds with non-volatility, but adoption seems to be low. Possibly due to scaling issues. I've had a FRAM-based TI MSP430 in my random parts drawer for about a decade.

That was my first FRAM experience, too. Good chip, good times. Insanely low power draw!