Minimum external clock requirement for STM32G474CET3

[sag]

Hi I am using below controller in one of our design

STM32G474CET3

i would like to know minimum external clock frequency on which my microcontroller works.

Also my requirement includes 1 SPI, 1 I2C and 4 ADC input sensing.

I would need very minimum external clock frequency on which it can ru,

And ultimate goal is to run 1 SPI, 1 I2C and 4 ADC input sensing at a very low current consumption for 3.3V microcontroller supply,

In datasheet its mentioned from 4 MHz, can this be used in 1 to 3 MHz range too

Also any ball park current consumption can i get for 1 SPI, 1 I2C and 4 ADC input sensing at 3.3V input to Microcontroller.

[Uwe Bonnes]

For external clock, not external crystal, there is no lower limit.

[sag]

Yes you are correct its not just a crystal

i am connecting external clock generation IC which generates 1 MHz clock,