Hi, Every one i am new in mcu Do i able connect ST-Link direct to STM8L0826C ? If it possible How to wiring pin? Thank all for advance.

[Tesla DeLorean]

Would use a SWIM interface.

Surely in the Reference Manual / Data Sheets.

Perhaps look at the schematics for DISCO, NUCLEO boards for the STM8 products. Should be under the "CAD Resources" on related product pages.

[Tesla DeLorean]

https://www.st.com/resource/en/user_manual/cd00173911-stm8-swim-communication-protocol-and-debug-module-stmicroelectronics.pdf

https://www.st.com/resource/en/user_manual/um1075-stlinkv2-incircuit-debuggerprogrammer-for-stm8-and-stm32-stmicroelectronics.pdf

https://justanotherelectronicsblog.com/?p=432

[Tnove.1]

Thank very you for you quick response.

But i not expert in this thing i have an exist pcb baord(product) using STM8L052. I'm trying to connect it directly but using ST device to read or write on mcu. but no idea how to connect ST-Link to mcu pin also don't know it's possible or not.

On STM8L052C6 i find VDD(pin10), GND(pin9),RESET(pin2) but no idea for data pin.

[Tnove.1]

But in physical they already wiring pin 1,2,9,12 for service terminal.