ARM-USB-OCD-H is a low-cost ARM OpenOCD debugger. It supports targets from 1.65V up to 5.0V. Many SOC manufacturers like Intel, Intel/Movidius, nVidia and others use it in their development work. Intel quotes ARM-USB-OCD-H and ARM-JTAG-20-10 in their appnote “Source Level Debug using OpenOCD/GDB/Eclipse on Intel® Quark™ SoC X1000”.
A few month ago we got an interesting question. A new SOC manufacturer was trying to debug their SOC with ARM-USB-OCD-H, but the problem was that their target was working on 1.2V. They asked us if we could modify our JTAG to be able to work at lower than 1.65V targets.
Our engineers identified a couple of components which we could upgrade to support lower voltages. The final result was that the ARM-USB-OCD-HL new modification of the JTAG can now work with targets from 0.65V up to 5.5V.
This pretty much covers all existing SOCs on the market.
olimex 
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