Troubleshoong First Steps
User Guide
© 2023 Microchip Technology Inc. and its subsidiaries
DS-50003529B - 62
12. Incorrect brown-out voltage. Brown-out Detect voltage is greater than the operating voltage
VDD. This means the device is in Reset and cannot be debugged.
13. Incorrect connections. Review the guidelines in 3.3. Target Connections for the correct
communication connections.
14. Invalid request. The debugger cannot always perform the action requested.
6.3 General Consideraons
1. There may be a problem programming in general. As a test, switch to Run mode using the icon
and program the target with the simplest application possible (for example, a program to blink
an LED). If the program will not run, then you know that something is wrong with the target
setup.
2. It is possible that the target device has been damaged in some way (for example, over current).
Development environments are notoriously hostile to components. Consider trying another
target board.
3. Application is overwriting debugger reserved resources. Check your linker scripts and map les
to ensure there is no conict between the RAM and FLASH areas used by application and
debugger.
4. Review debugger setup to ensure proper application setup. For more information, see
4. Operation.
5. Your program speed may be set too high for your circuit. In MPLAB X IDE, go to
File>Project
Properties, select ICD 5 in “Categories,” then “Program Options,” “Program Speed” and select a
slower speed from the drop-down menu. The default is “Normal.”
Figure 6-1. Program Speed Opon
6. There may be certain situations where the debugger is not operating properly and rmware may
need to be downloaded or the debugger needs to be reprogrammed. See the following sections
to determine additional actions.
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