Keil Logo


The LEDs on the MCB1700 board are:

  • The POWER LED indicates that power is present on the board.
  • The 8 Port LEDs marked P1.28, P1.29, P1.31 and P2.2 - P2.6 connect to their respective port pins when jumper LED is installed. These LEDs are useful for indicating program status while testing your applications. Removing Jumper LED disables the LED driver chip (IC9).
  • The 100M LED indicates a 100Mbit Ethernet LAN connection.
  • The ORANGE LED (right/lower) on the Ethernet connector indicates LAN traffic is present.
  • The GREEN LED (left/upper) on the Ethernet connector indicates a good link connection to the LAN.
  • The USC LED indicates a USB soft connect from P2.9.
  • The UGL LED indicates a good USB link.
  • The SD LED indicates that an SD card is detected.

MCB1700 Board


  • The LED pins P2.2 - R2.6 are multiplexed with the ETM Interface. No jumper exists to switch the functionality. ETM output and LEDs cannot be used at the same time.
  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.