The common failure reasons specifically for PIC microcontrollers
Here are the common failure reasons specifically for PIC microcontrollers (from Microchip Technology ), along with ways to prevent them: Why PIC Microcontrollers Fail 1. Electrical Overstress (EOS) Exceeding VDD or I/O pin voltage (typically >5.5V for 5V devices, >3.6V for 3.3V devices): Can damage internal CMOS gates. Reverse polarity on power input destroys internal logic. Inrush current from large capacitors or inductive loads can exceed limits during power-up. Common in motor control or poorly protected sensor interfaces. Prevention : Use clamping diodes, current-limiting resistors , and proper transient protection. 2. Electrostatic Discharge (ESD) PICs are moderately protected internally but still vulnerable during handling or unprotected GPIO connections. Prevention : ESD-safe work environment and external TVS diodes or series resistors on sensitive lines. 3. Power Supply Issues Brown-out conditions can cause...