Other Parts Discussed in Thread: SYSCONFIG
Hi team,
On customer's PCB, CC1352P is connected with another MCU (the CC1352P RESET_N is connected with one GPIO of the MCU). On their manufacturing line, they use SmartRF Studio to test RF performance. They find out if CC1352P is pre-programed with FW image, when launching SmartRF Studio, it will show "Not able to open Device Control". The fail rate is 80%. However, after doing "Forced Mass Erase", the SmartRF Studio can 100% connect the CC1352P.
The want to clarify why CC1352P with pre-programmed FW image cause SmartRF Studio cannot work.
Below show the scope measurement for RESET_N pin. For both OK case(first picture) & NG case(2nd picture), the RESET_N is pulled low (lower than 0.66V, 0.2*VDDS) for over 1us. It meets CC1352P data sheet spec.
Fig. 1, OK case:
Fig 2. NG case: