18f24K40

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backpacker69
Posts: 18
Joined: Sun Feb 03, 2013 2:26 am
Location: Salmon, Idaho

Re: 18f24K40

Post by backpacker69 » Fri Jun 16, 2017 4:07 pm

After reviewing my plan and end product I am going back to the 18f2221
In this application there is no real advantage of using a K series pic.
Thanks for the input as I WILL be utilizing a K series pic for my Christmas project that is on the back burner
I miss backpacking the Sierras

Jerry Messina
Swordfish Developer
Posts: 1245
Joined: Fri Jan 30, 2009 6:27 pm
Location: US

Re: 18f24K40

Post by Jerry Messina » Fri Jun 16, 2017 6:17 pm

The K series are usually a bit cheaper than the older chips, and are spec'd to run at a lower voltage.

The old 18F2221 is only spec'd down to 4.2V (although it'll likely work lower than that).
You need the LF2221 to go down to 2V and still be in spec.

The standard K22 will go down to 2V, and LFxxK22 down to 1.8V.
If you're running from batteries you might even look at the K20. They're 3V parts, work down to 1.8V, and are cheaper yet still.
They do have some bugs in them so it depends on what you're using whether they're a good choice or not.

I don't know all that you're looking for so I can't make any other real suggestions.

I'll add the 18F2x21 parts to intosc.bas and post it. That way you'll have it.

Jerry Messina
Swordfish Developer
Posts: 1245
Joined: Fri Jan 30, 2009 6:27 pm
Location: US

Re: 18f24K40

Post by Jerry Messina » Sat Jun 17, 2017 3:11 pm

I've added a new IntOSC module to the wiki at http://www.sfcompiler.co.uk/wiki/pmwiki ... ser.IntOSC

It includes the 2221 and a number of other devices.

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