STM32F103

The STM32F103 processor is used on the Blue Pill STM32 Development Board.

Fakes and Clones

There are a number of "clones" of the STM32F103 available. Most of those are likely properly licensed Cortex-M3 cores with peripherals designed to match the original STM32 and most can be used as drop-in replacements with some "quirks".

Unfortunately there are also quite a lot of fake chips available:

Fake STM32F103 (possibly a HK32) from some random Blue Pill	Real STM32F103 from my own Green Pill board

These are chips labelled STM32F103xxx but they are not

PIN Count

== Miscellaneous Links ]]

• Bluepill Diagnostics