ST STM32U5G9J-DK2 - Microcontroller Current Measurement; Clock Sources; Low-Speed External Clock (LSE); High-Speed External Clock (HSE)

6.5.5 Measurement of microcontroller current consumption
The power consumption measurement of the STM32U5G9ZJT6Q MCU is possible by replacing the JP4 jumper
labeled IDD with an ammeter.
Figure 14. Current consumption measurement jumper (JP4)
DT59227V1
IDD MCU
(JP4)
6.6 Clocks
6.6.1 Low‑speed external (LSE) clock
The LSE oscillator clock reference on the STM32U5G9ZJT6Q MCU is provided by the external 32.768 kHz
crystal X1.
6.6.2 High‑speed external (HSE) clock
The HSE oscillator clock reference on the STM32U5G9ZJT6Q MCU is provided by the external 16 MHz crystal
X2.
6.7
Reset
The reset (NRST) signal of the STM32U5G9ZJT6Q MCU is active at a low level. Internal MCU pull‑up resistor
forces the reset (NRST) signal to a high level.
Reset sources are:
• The reset button B1 (side button),
• The embedded STLINK-V3EC,
• External debug interfaces (CN10 and CN11),
• And the ARDUINO
®
connector (CN5): pin 3 reset from the ARDUINO
®
board.
UM3223
Hardware layout and configuration
UM3223 - Rev 1
page 16/37