The RAK15005 WisBlock FRAM NVRAM Module adds non-volatile memory to WisBlock systems using the Fujitsu MB85RC1MTPNF FRAM chip.
 
With 128 kB capacity, 10-trillion write cycles, and 10-year data retention, it delivers a reliable, low-power solution for storing configuration data and sensor logs without wear-cycle limitations typical of EEPROM or Flash devices.
 
Its I²C-compatible interface supports up to 1 MHz data rates for fast read/write access, while the low standby current of 15 µA makes it ideal for battery-powered and industrial IoT systems.
 
Compact and robust, the RAK15005 is a perfect choice for secure data retention in WisBlock designs that require high endurance and efficient memory performance.
 
Key Features
 
128 kB non-volatile FRAM storage (Fujitsu MB85RC1MTPNF)
Up to 10 trillion read/write cycles per byte for maximum durability
Data retention 10 years @ 85 °C / 95 years @ 55 °C / 200 years @ 35 °C
I²C digital interface supporting up to 1 MHz communication speed
Low operating current (0.71 mA typ @ 3.4 MHz)
Ultra-low standby current (15 µA typ)
Compact 10 × 10 mm module
Industrial temperature range (–40 °C to +85 °C)
Compatible with WisBlock Base and Core modules
 
Ideal For
 
Sensor data logging and calibration storage
Configuration retention across power cycles
Battery-powered IoT devices and edge nodes
Industrial and environmental monitoring systems
Applications needing high endurance non-volatile memory