22.1 Overview

Non-volatile Memory (NVM) is a reprogrammable Flash memory that retains program and data storage even with power off. It embeds a main array and a separate smaller Read While Write EEPROM Emulation array (RWWEE Emulation) that can be programmed while reading the main array (RWWEE stands for Read (the main array) while Write (the EEPROM Emulation)). The NVM Controller (NVMCTRL) connects to the AHB and APB bus interfaces for system access to the NVM block. The AHB interface is used for reads and writes to the NVM block, while the APB interface is used for commands and configuration.