I am using an Atmage1280-16AI 100-TQFP.
AVR Studio 4.12 SP4.
VCC is 3.3V on my board.
All JTAG connections are verified.
TDI - pin 90
TDO - pin 91
TMS - pin 92
TCK - pin 93
nSRST - pin 30
VTRef - pins 80,61,10,31,100 (VCC)
GND - pins 11,32,99,81,62 (GND)
I have the /reset tied to VCC through a 10k resistor and in series with a 0.1uF cap to GND. There is nothing connected to the other pins.
I cannot program the chip at all, I get failed to identify target.