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[pic12f1572] Disabled MCLR pin keeps pic from start

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Hello,

Well, as stated in the title, I'm using a PIC12F1572 in a 8pin package.

So i disabled the MCLR pin in the CONFIG words.
Now, the problem is if this pin is kept low on power up the PIC never actually starts executing code. if I left it float on power up and connect the device after it works normally.

Has anyone encountered such behaviour? Is there anything I am missing from the datasheet?

As far as I understand, this pin can only be used as a input, and to actually disable the MCLR...

[pic12f1572] Disabled MCLR pin keeps pic from start

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