SWCU192 November 2021 CC1312R7 , CC1352P7 , CC2652P7 , CC2652R7
The CC13x2x7 and CC26x2x7 device platform includes a simple, ROM-based bootloader that can communicate with an external device over the serial interfaces on the UART0 and SSI0 peripherals. The same communication protocol is used on both serial interfaces. These peripherals are IPs from Arm®.
The main purpose of the ROM bootloader is to support functionality for downloading a flash image.