Introduction
This application note applies to the SiM3Cxxx, SiM3Uxxx, and SiM3Lxxx device families. The Flash memory on all Silicon Labs MCU devices is readable and writable from application code. This capability allows user software to store values, such as calibration constants or system parameters, to the Flash and to implement a boot-loading feature in which user firmware can be updated in-system from a remote site. The Flash that is not used by application code can be treated like an EEPROM, thus negating the need to connect an external EEPROM to the device.