9.1 Reset Problem on the SAM-ICE V5.1

In certain cases, the reset signal generated by the AT91 target may be inoperative due to the fact that the SAM-ICE reset output (JTAG connector pin 15) is a push-pull stage with a 100Ω serial resistor.

Workaround

  • Replace R19 by a Schottky diode with the same resistor footprint (e.g. BAT54J)

  • Remove the resistor

This problem has been resolved in SAM-ICE V5.2.