Lawicel CANUSB adapter for simple CANBUS connection to PC
Question:
What is the low voltage support on different AVR programmers?
Answer: AVRISP supports programming down to 3.3V.
PSI-ISP supports 4V on parallel port and 2.7V on Serial port.
AVRUSB supports voltages down to 1.8V.
AVRISP-U supports programming down to 2.6V