Zym Dap

ST-Link Programmer with different power supply voltage?

Discussion created by Zym Dap on Apr 12, 2018
Latest reply on Apr 12, 2018 by Zym Dap



Is it possible to use ST-Link/V2 programmer with different power supply voltage? My board has power supply of 2.7V (uC STM32L053). Have tried connecting ST_Link's Vapp to my 2.7V, probed SWD interface lines (not connected to my uC) and there are still 3.3V levels on them... I'm afraid to connect all the interface because I have suspicion that these levels incompatibility caused my uC noise and internal structure damages as I wrote in my previous post.

Thanks in advance!