Welcome, @H_H_11 to the community!
First a note: even though all STM8A will still be available until 2031, they are already on NRND (Not Recommended for New Design).
The STM8A-DISCOVERY consists of two boards, with the MB1036 containing an STM8AF5288TAY. However, there is no technical difference between the part with suffixes X and Y, both letters only denote the packaging unit in which the STM8AF5288TA is delivered. This can also be found in the data sheet.
Does it answer your question?
Regards
/Peter
In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
