18f2320

[skimask]

Well, that code doesn't do ANYTHING!!!
I use the 4xPLL almost exclusively on the 18F series. Haven't had a problem with it.
Good cap's across on Vdd/Vss, decent ramp up on the power supply, pullup on MCLR?

[Bruce]

Do you have the extended or industrial version of the 18F2320?

[mikeh]

i wii check what version i have
what is the right one
reason i did not include code as i tested it with simple led on wait led off
works on all speeds except hspll will try again
what ramp speed do you use?

thanks

[skimask]

what ramp speed do you use?

Sorry...I don't have enough money to buy a power supply with a programmable power on ramp up...

Just a clean power supply, decent design, make sure the config bits are set right, try a slower crystal while still using 4xPLL (i.e. 4Mhz xtal gives you 16Mhz, etc)...and so on...

[mikeh]

ok
so how do you know if you have extended or industrial
spec are not clear on this ?

mike

[mackrackit]

The next to the last page of the data sheet tells how to identify the chip.
18Fxxx = normal voltage
18LFxxx= extended voltage

If there is an "I" near the end of the number (I/P) it is industrial.

[mikeh]

thanks for info
i am using 18f2320 (i/sp)