Renesas' digital multiphase controllers support OTP, one time programmable, NVM memory to store user configuration settings. The family of devices supports up to eight NVM slots. It is important to recognize that once an NVM slot is used, it cannot be erased or reprogrammed. Moreover, multiple versions of the same Configuration ID can be stored in NVM; however, the controller will always load the most recent version of the configuration. At start-up, an external pin strap resistor is used to tell the controller which Configuration ID to load. The released datasheets contain information on pin strap resistors available for the eight slots.