1-10pcs】FM24C16B FM 24C16B High Quality New 100% Original F-RAM 16Kb Serial I2C 5V FRAM - AliExpress
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Overview | Adafruit I2C FRAM Breakout | Adafruit Learning System
256 x 8-bit static low-voltage RAM with I2C-bus interface
Adafruit I2C Non-Volatile Ferroelectric Ram Breakout - 256Kbit / 32KByte for 3V or 5V Power and Logic or FRAM Storage to DIY Project 1895: Amazon.co.uk: Computers & Accessories