18F25J50 configuration bits

fbtech · Joined: 25 Mar 2015 Posts: 7

Hello, I'm using 18F25J50.
I configured my MCU fuses as follows:

temtronic · Posted: Wed Jun 03, 2015 6:41 am

hmm..
#FUSES HS,NOCPUDIV,NOFCMEN,NOIESO,NOIOL1WAY,NOWDT,RTCOSC_INT,NOSTVREN,NOPROTECT,NODEBUG

what's the last fuse you set ???

re: pgm doesn't run...

if you're using MPLAB be sure the 'build configuration' is set to 'release' and NOT 'debug'( the default)

Jay

fbtech · Joined: 25 Mar 2015 Posts: 7

Thanks for your reply.

1- I use only these fuses
2- I configured the 'build configuration' to 'release' but I have the same problem ==> nothing is running Sad

Ttelmah · Joined: 11 Mar 2010 Posts: 19539

So:

MCLR is pulled up?.

You have a crystal on RA6/RA7?.
With correct capacitors?.

GND on pin 8, & 19?.

Supply on Pin20?.

Decoupling capacitor close to the chip on the main supply, a separate one on the Vusb pin, _and a separate one on the Vddcore pin_ (very necessary)?.

You need NOXINST. You should have STVREN, not NOSTVREN.

What is your supply voltage?.

What is the crystal frequency?.

Does it start if you set FCMEN?. (would at least prove everything else is working other than the oscillator).

Compiler version?.