Keil Logo


Information in this article applies to:

  • MCB-XC167 Evaluation Boards


My MCB-XC167 Board shows strange behaviour like sporadic or periodic Resets, indicated by the RSTOUT LED. This happens in most cases if the PLL is configured to frequencies above 20 MHz.


In early versions of the MCB-XC167 Evaluation Boards (both BAS and NET variants) the two resistors R26/R27 may drop too much voltage. This prevents the voltage regulator IC8 from producing a stable output voltage if the input voltage is below ~7.5V.


To solve this problem you can remove the resistors and bridge them with a jumper wire. This will provide a proper power supply for the CPU Core when using the recommended 6V power supply. In newer production runs the board is populated with two 22 Ohm resistors.

Last Reviewed: Monday, February 14, 2005

Did this article provide the answer you needed?
Not Sure
  Arm logo
Important information

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies.

Change Settings

Privacy Policy Update

Arm’s Privacy Policy has been updated. By continuing to use our site, you consent to Arm’s Privacy Policy. Please review our Privacy Policy to learn more about our collection, use and transfers
of your data.