5.1.3 SWD Lines

For SWD programming and debugging purposes, use the CM4_SWCLK, CM4_SWDIO and CM4_SWO pins. The recommendation is to use the CM4_SWCLK and CM4_SWDIO pins for the PIC32WM-BZ6 Module for SWD as the default configuration (CM4_SWO can be optional).

Keep the trace length between the SWD pins of the PIC32WM-BZ6 Module and the SWD header as short as possible. If the SWD connector is expected to experience an ESD event, a series resistor is recommended with the value in the range of a few tens of Ωs, not to exceed 100Ω.