I am using ATMEGA32L.
The atmel datasheet mentions that TDO pin should have pullup, if not used in the circuit, when JTAGEN fuse is enabled. If left floating, draws considerable static current.
The numbers are not mentioned anywhere. Any idea about this number???
Another thing, I get tremendous noise on RXD pin whenever I connect JTAG ICE on target board. As I am using UART, the repective interrupts are enabled and even if external device is not communicating, execution is interrupted continuously. If I remove JTAGICE from target board, everything works fine. I have checked board thoroughly, but unable to find any relation between RXD and JTAG pins.