Skip to main content
Manikandan K
Manikandan K
Associate III
Apr 4, 2018 8:31 PM UTC
Solved

USART3 voltage level

Posted on April 04, 2018 at 22:31

I'm using STM32F207ZG ,What is maximum Voltage level at Tx and Rx pin in USART3? Can I use 5V CP2102  USB to TTL converter with STM32F207ZG?

    This topic has been closed for replies.
    Tesla DeLorean
    Tesla DeLoreanBest answer
    Guru
    Apr 4, 2018 8:42 PM UTC
    Posted on April 04, 2018 at 22:42

    The Data Sheet should indicate if specific pins are FT (Five Volt Tolerant)

    http://www.st.com/content/ccc/resource/technical/document/datasheet/bc/21/42/43/b0/f3/4d/d3/CD00237391.pdf/files/CD00237391.pdf/jcr:content/translations/en.CD00237391.pdf

     
    Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
    View in thread

    2 replies

    Tesla DeLorean
    Tesla DeLoreanBest answer
    Guru
    Apr 4, 2018 8:42 PM UTC
    Posted on April 04, 2018 at 22:42

    The Data Sheet should indicate if specific pins are FT (Five Volt Tolerant)

    http://www.st.com/content/ccc/resource/technical/document/datasheet/bc/21/42/43/b0/f3/4d/d3/CD00237391.pdf/files/CD00237391.pdf/jcr:content/translations/en.CD00237391.pdf

     
    Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
    T J
    T J
    Senior III
    Apr 5, 2018 5:59 AM UTC
    Posted on April 05, 2018 at 07:59

    the CP2102 that I use is 3V = 3.6V

    https://www.digikey.com.au/products/en/integrated-circuits-ics/interface-controllers/753?k=cp2102

     

    I connected it directly, but as a 3V unit.

    Terms & ConditionsAccessibility statement