SWCU185G January 2018 – June 2024 CC1312PSIP , CC1312R , CC1352P , CC1352R , CC2642R , CC2642R-Q1 , CC2652P , CC2652PSIP , CC2652R , CC2652RB , CC2652RSIP , CC2662R-Q1
The bootloader communicates with an external device over a 2-pin UART or a 4-pin SSI interface. The communication protocol and transport layers are described in the following subsections.