Posted on June 26, 2017 at 20:30Thanks for your input, let's go two paths with this topic:1) Why isn't STLink using 1.8V IO when target voltage is 1.8V?I don't think this is answered. My understanding is 1.8V is a supported mode of operation (i.e. a...

Posted on June 26, 2017 at 19:55Hi Clive, thanks for providing some insight.For my adapter, purchased from Digikey, it looks like an authentic device per your U2 level shifter reference; same TI product package marking. Trace layout and the ground p...

Posted on June 26, 2017 at 19:28+1I see this exact same issue on my ST Link V2; paired with a STM32L4x6, using both STM32 ST-Link Utility and STM Workbench. Pin 1 Target VCC is steady 1.8V throughout, but the IO voltage on SW CLK and SWO are 3.3V. T...