Will there be any issue in operating STM32F2 on 2.5 Volts?

[Pranay Dhuri]

Posted on July 06, 2017 at 13:26

Hi there,

As mentioned above, I need to operate STM32F2 at 2.5V and the peripherals which i am gone use are USART, I2C, FSMC, ETHERNET, USB_FS. I have seen the datasheet for limitations depending on operating power supply. which has mentioned about ADC and fsmc clock limitations, what other issues I may face while accessing these peripherals?

Thanks

#operating-power-limitations

[Tesla DeLorean]

Posted on July 06, 2017 at 13:45

The USB drivers have minimum voltage requirements.

[Khouloud GARSI]

Posted on July 06, 2017 at 16:54

Hi

Dhuri.Pranay

‌,

For the Ethernet:

For USB:

The USB is functional, including its internal transceiver, only for VDD >= 2.7 Volts.

For VDD < 2.7 V, we are not guaranteeing that our internal transceiver is functional at all temperature and process variation.

However, to be compliant with USB specification, you need to have minimum of 3 Volts.

Khouloud.