Ranbeer Singh
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Hello experts
I made a pcb with pic18f25k20 microcontroller. I programmed it and powered it for few days. After 2 weeks microcontroller pin that connected with 7segment/3digit display dot pin stopped to working.
In the circuit microcontroller pin connect to 7seg pin with a series resistance 470E. 3.3v power supply for whole circuit.
3.3/470 = 7ma
Microcontroller pin capable to carry 25ma according to datasheet. I wonder why this pin stopped to working.
I will be thankful if you give me some advice about it.
I made a pcb with pic18f25k20 microcontroller. I programmed it and powered it for few days. After 2 weeks microcontroller pin that connected with 7segment/3digit display dot pin stopped to working.
In the circuit microcontroller pin connect to 7seg pin with a series resistance 470E. 3.3v power supply for whole circuit.
3.3/470 = 7ma
Microcontroller pin capable to carry 25ma according to datasheet. I wonder why this pin stopped to working.
I will be thankful if you give me some advice about it.