GPIO Key Code Behavior after Interrupt Processing in Traveo S6J3XXX MCUs - KBA226524

Author: kotaroh_86           Version: **

 

Question:

When an interrupt request occurs during unlocking key code protection of I/O port, will the key code protection be unlocked after the interrupt processing?

 

Answer:

If an interrupt processing contains I/O port access, unlocking process will fail. You need to handle unlocking key code protection again or disable the interrupt during unlocking key code protection.

If an interrupt processing does not contain I/O port access, key code protection is unlocked after the interrupt processing.

 

Note:

This KBA applies to the following series of Traveo MCUs:

  • S6J3110
  • S6J3120
  • S6J3200
  • S6J3300
  • S6J3350
  • S6J3360
  • S6J3370
  • S6J3400
  • S6J3510