Atmel ATSAM3U-EK データシート
SAM3U-EK Evaluation Kit User Guide
7-1
6478E–ATARM–30-Mar-11
Section 7
Errata
7.1
JTAG/ICE: Missing Pull-up Resistor on TDO Pin
The TDO pin is in input mode with the pull-up resistor disabled when the Cortex M3 is not in debug
mode.
mode.
Problem Fix/Workaround
To avoid current consumption on VDDIO and/or VDDCORE due to floating input, an external pull-up
resistor (100 k
resistor (100 k
Ω) corresponding to this PIO line must be added.