26.2 Features

The following are key features of the NVMCTRL module:

• 32-bit AHB interface for reads and writes.
• Data Flash.
• All NVM sections are memory mapped to the AHB, including calibration and system configuration.
• 32-bit APB interface for commands and control.
• Programmable wait states.
• 16 regions can be individually protected or unprotected against erase and writes.
• Additional protection for bootloader against erase and writes.
• Supports device protection through a security bit.
• Supports permanent disabling of the Chip-Erase feature.
• Hamming Error Code Correction (ECC) logic on main array, Data Flash section, calibration area and Configuration rows. Single Error Correction and Double Error Detection (SECDED), with fault injection for testing purpose.
  Note: The ECC feature is available only on the PIC32CM5164 and PIC32CM2532 variants.
• Interface to Power Manager for power-down of Flash blocks in sleep modes.
• Can optionally wake up on exit from sleep or on first access.
• Direct-mapped cache for the main array and the Data Flash section.