Overview of the Discovery Board
For getting started with STM8s, STM has provided several STM8 Disco boards. There are also other
third party boards too. However, I strongly recommend Disco boards for learning and experimental
purposes. There are several reasons for this recommendation. One main reason is the fact that all
Disco boards come with on-board detachable ST-Link programmers and they are extremely cheap.
Shown below is the top layout of a STM8S discovery board.
The board I used here in this article hosts a STM8S003K3T6 micro. It is an 32 pin entry-level micro with
8kB flash, 1kB RAM and 128 byte true data EEPROM. It comes with some additional hardware – a LED
connected to PD0 and a push button connected to PB7. Just as I said it also houses a detachable ST-
Link programmer. However, I don’t recommend separating the programmer from the whole package.
The board also has a prototyping area should one needs to prototype something. The overall board
has a small form-factor and is a bit longer than a standard credit card. There are several other similar
and popular STM8 Discovery boards like the STM8S105 Discovery.
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