I have built a circuit to display something onto LCD using PIC16F628A using internal crystal..
However, the strange thing that happen is I am able to drive the LCD without supplying any voltage to VDD pin..
I just connect 5V to RA2 and GND to VSS and the LCD begins to display the wordings.
I have check the schematic and the board i constructed and nothing is connected to RA2.
I measured the voltage at RA2 and it is measured to be 5.14V. I also measured the VDD voltage and found it to be 4.33V.
Has anybody encountered the same thing before..?
Is my PIC16F628A faulty or did i make a mistake..?
However, the strange thing that happen is I am able to drive the LCD without supplying any voltage to VDD pin..
I just connect 5V to RA2 and GND to VSS and the LCD begins to display the wordings.
I have check the schematic and the board i constructed and nothing is connected to RA2.
I measured the voltage at RA2 and it is measured to be 5.14V. I also measured the VDD voltage and found it to be 4.33V.
Has anybody encountered the same thing before..?
Is my PIC16F628A faulty or did i make a mistake..?