18F1320 Clock running

[Dave W]

Hello Dave...
The xtal is a Citizen CM309S series...18pF Cl...

I tried the 1Mohm R across the xtal... no luck...
I also tried the series R from 10 ohm to 27 ohm... no luck

Maybe a bit more background...
Basically I have built 3 units... (I only had 3 PCB's built from the "quick turn" PCB house..)
2 worked... 1 doesn't... using the same S/W code...
but it took 6 - 18F1320 units to get the 2 working units....
That's why I thought it may have been a S/W setup problem...

The one key symptom is that the xtal osc isn't running...
This happened before... but I think because of IC swapping... it went away...

Dave W
N9DQW

[Acetronics2]

Hi, Dave

Did you tried to read the real config settings from the chip ONCE PROGRAMMED ???

I had surprises also on this side ...

Alain

[iw2fvo]

Hi !
I have to transfer a program from a pic16f628 to a PIC18F1320 enviroment..
The program runs well on the 628 but it does not on the 1320.
The prg compiles OK using PBP pro and the micro is programmed OK with ICD2 programmer.
I use a 20 Mhz XTAL osc and it is running as seen by the scope.
Any help for me to configure the new 1320 ?
Thanks in advance.
Ambrogio