ST STM32WBA65I-DK1 User Manual page 14

CN15 pin
1
2
3
4
5
6
7
8
9
10
1. Not connected on this board
2. Output for this board
3. SWO is optional and required only for Serial Wire Viewer (SWV) trace.
7.2 Power supply
The STM32WBA65I-DK1 Discovery kit IoT node board is designed to be powered by a 5 V DC power supply. It is
possible to configure the Discovery board using a jumper on JP4 to use any of the following five sources for the
power supply: 5V_USB_STLK, 5V_VIN, 5V_EXT, 5V_USB_CHGR, and 5V_USB_MCU. The user must only
connect one source at a time.
A power supply unit or auxiliary equipment complying with EN 62368-1:2014+A11:2017 or its superseding
standard must power the product. It must also be a safety extralow voltage (SELV) with limited power capability.
7.2.1 5V_STLK
5V_STLK is a 5 V DC power with limitation from the STLINK-V3EC USB Type-C
jumper must be set on [1‑2] to select the 5V_USB_STLK power source on the JP4 silkscreen (refer to
below). This is the default setting. If the USB enumeration succeeds (as explained below), the 5V_STLK power is
enabled by asserting the T_PWR_EN signal (from STLINK-V3EC MCU). This pin is connected to a power
controller, which powers the board. This power controller also features a current limitation to protect the PC, in
case of a short circuit on the board or if the USB port cannot provide the necessary current.
UM3462 - Rev 1
Table 5. TAG footprint (CN15) pinout for TC2050-IDC-NL cable
Signal
3V3
Target power
MCU.SWDIO Target SWDIO using SWD protocol or target JTMS (T_JTMS) using JTAG protocol
GND Ground
MCU.SWCLK Target SWCLK using SWD protocol or target JTCK (T_JTCK) using JTAG protocol
Ground
GND
It must be disconnected (SB1) if the debugger probe provides a power supply on this pin.
MCU.SWO
Target SWO using SWD protocol or target JTDO (T_JTDO) using JTAG protocol
NC Not connected
MCU.JTDI Not used by SWD protocol, target JTDI (T_JTDI) using JTAG protocol
JNTRST JTAG reset
NRST Target NRST using SWD protocol or target JTMS (T_JTMS) using JTAG protocol
Figure 9.
5V_STLK
5V_VIN
5V_EXT
VBUS_STLK
5V_USB_MCU
Function
(2)
(1)
5V_USB_STLK selection: JP4 [1-2]
JP4
1 2
4
3
5 6
8
7
9 10
UM3462
Hardware layout and configuration
(3)
®
connector (CN6). In this case, a
Figure 9
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