4.8.3Recommendations

The Clock Configuration view is not the only entry for clock configuration, RCC and RTC peripherals can also be configured.

1.From the Pinout & Configuration view, go to the RCC mode panel to enable the clocks as needed: external clocks, master output clocks and Audio I2S input clock when available. Then go to the RCC configuration panel, and adjust the default settings if needed. Changes are reflected in the Clock Configuration view. The defined settings may change the settings in the RCC configuration as well (see Figure 99).

Figure 99. Clock tree configuration: enabling RTC, RCC clock source and outputs from Pinout view

2.Go to the RCC configuration in the Pinout & Configuration view. The settings defined there for advanced configurations are reflected in the Clock configuration view. The defined settings may change the settings in the RCC configuration.

Figure 100. Clock tree configuration: RCC peripheral advanced parameters

4.8.4STM32F43x/42x power-over drive feature

STM32F42x/43x MCUs implement a power over-drive feature that allows them to work at the maximum AHB/APB bus frequencies (e.g., 180 MHz for HCLK) when a sufficient VDD supply voltage is applied (e.g VDD > 2.1 V).

Table 11 lists the different parameters linked to the power over-drive feature and their availability in STM32CubeMX user interface.