How can I judge fake chip or not @ stm32f103cbt6

[yuichi kawamura]

Posted on December 04, 2017 at 14:18

I knew most stm32f103cbt6 implemented in Blue Pill (

https://os.mbed.com/users/hudakz/code/STM32F103C8T6_Hello/

 ) is fake.

One of my friend says 'if 

F is printed on the second line, it's fake

'Is it true? and how can I judge fake or not correctly?

[Tesla DeLorean]

Posted on December 04, 2017 at 14:21

Perhaps to could take and attach a picture? Macro and in focus..

The Data Sheet should illustrate the markings. The ST-LINK Utility should show the Device ID read from the part.