STLINK V3 ISOL - what speed should it run at?

[PHolt.1]

It fails at 24MHz, but mostly works at 8MHz. Is there a spec on it somewhere?

[Tesla DeLorean]

Chart says SWD 12 MHz

"Table 19. Achievable maximal performance with STLINK-V3SET on different channels"

https://www.st.com/resource/en/user_manual/dm00526767-stlinkv3set-debuggerprogrammer-for-stm8-and-stm32-stmicroelectronics.pdf

[PHolt.1]

OK - 8MHz. Many thanks.

Curiously that table states 16MHz for the SWV, while Cube IDE supports a max speed of 2MHz. Getting this to go faster would be useful because it affects the execution speed of SWV ITM debug output; you want maximum speed on that.

[PHolt.1]

I did some tests, on straight code loading, no debugging etc, and the ISOL board bombs out around 18MHz. This is probably cabling dependent.

Note that there is a weird problem with the connector usage

https://peter-ftp.co.uk/screenshots/20210510393155911.jpg