The popular Olimex ARM OpenOCD JTAG programmer debugger ARM-USB-OCD-H gets better, now has a modification which works with targets from 0.65 up to 5.5V | olimex
ARM-JTAG-20-10
ARM-USB-TINY - JTAG
ARM-USB-OCD-H Olimex LTD | Development Boards, Kits, Programmers | DigiKey