Can I use STM32G030F6P6 without the external Crystal circuit? If so, could you give some guidance on the software configuration? BR Gilberto

[GErma.1]

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[MM..1]

YES and for sw use IDE config wizard.

[S.Ma]

Most STM33 are designed to have internal RC oscillator to save pins in small packages found in F0 L0 or G0. They have some tolerances which limit the max baurates on uart, precise calendar clocks, usb host functions, ethernet,.... however good enough most of the time, and is a backup if external clock fails.

[gbm]

Read the RCC section of Reference Manual. After reset, G0 runs off its internal 16 MHz oscillator; you don't need to configure anything if you are happy with this.

[GErma.1]

Hi

The precision is good enough for me. Just one more question:

Can I use HSI16 and the EXTI controller for waking-up the system from a low power mode using a INT?

BR

Gilberto

[S.Ma]

Why not. LSI is another option, in low power modes, core clock can be stopped and Lxxx peripherals can keep operating (LPTIM, LPUART).