nRF52833 DK v1.0.0

Connectors for programming external boards

The voltage on the external board must match that of the Development Kit (DK).

Table 1. Pinout of connector P19 for programming external targets
Pin number Signal Description
1 EXT_VTG Voltage supply from the external target, used as voltage detect input to the interface MCU
2 EXT_SWDIO Serial Wire Debug (SWD) data line
3 GND Ground
4 EXT_SWDCLK SWD clock line
5 GND Ground
6 EXT_SWO Serial Wire Output (SWO) line
7 N.C. Not used
8 N.C. Not used
9 EXT_GND_DETECT Ground detect. Should be connected to ground on the external board
10 EXT_RESET Reset
Table 2. Pinout of connector P20 for programming target on shields
Pin number Signal Description
1 VDD_nRF Used for current measurement
2 VDD_nRF’ Used for current measurement
3 SH_VTG Voltage supply from the external target, used as voltage detect input to the interface MCU
4 SH_SWDIO Serial Wire Debug (SWD) data line
5 SH_SWDCLK SWD clock line
6 SH_SWO Serial Wire Output (SWO) line
7 SH_RESET Reset line
8 SH_GND_DETECT Ground detect. Should be connected to ground on the external board
9 VIN3-5V Voltage supply
9 VDD_HV Used for current measurement
10 VDD_HV’ Used for current measurement
12 VIO_REF GPIO voltage reference input
13 ID DK ID resistor
Parent topic: Hardware description