3.4 What memory technology do the RF430CL33xH devices use?

The RF430CL33xH devices have SRAM memory, which allows for the fastest reading and provides unlimited read and write cycles. These devices require a microcontroller to load data to them on power up, which ensures the latest data is always current.

For applications in which data must be stored when the device is not powered, using TI microcontrollers with FRAM can allow for the retention of NFC data within FRAM. As an example, the Dynamic Field-Powered NFC for Data Logging Access Control and Security Applications reference design demonstrates a battery-less operation application with the RF430CL330H and a TI FRAM microcontroller. The devices are powered by energy harvesting from the RF field, and the TI FRAM microcontroller retains the NFC message while no power is present and loads the data to the RF430CL330H on power up.