Substituting a p18f2220

dr pepper

Well-Known Member

Most Helpful Member

• Mar 15, 2015

• #1

Can I replace this device with a p18f2520?
The software uses timer1 and serial port, not a lot else.

 

DerStrom8

Super Moderator

• Mar 15, 2015

• #2

Am I the only one not seeing an image?

 

dr pepper

Well-Known Member

Most Helpful Member

• Mar 15, 2015

• #3

No image posted!

 

P

Pommie

Well-Known Member

Most Helpful Member

• Mar 15, 2015

• #4

The only difference appears to memory size and so, if you have the code, I would say yes.

Mike.

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Mar 16, 2015

• #5

Ditto!!! Same pinout and same registers...

 

DerStrom8

Super Moderator

• Mar 16, 2015

• #6

Oh I see, your post is using the title as part of the question....

 

dr pepper

Well-Known Member

Most Helpful Member

• Mar 16, 2015

• #7

Oops my bad.

I'll try that and report my findings, I think my devices are 25k20's, thats no problem they are just 3.3v ones.

 

atferrari

Well-Known Member

Most Helpful Member

• Mar 17, 2015

• #8

Isn't simulation a good way to check that everything works OK?

 

dr pepper

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Most Helpful Member

• Mar 18, 2015

• #9

Turns out my stock devices are pic18f26k20's, sounds like theres more special functions on this device, I'm gonna blow one anyway and see if it'll work.
Sim is not an option I only have the hex file, this is not my work this time.

 

atferrari

Well-Known Member

Most Helpful Member

• Mar 18, 2015

• #10

dr pepper said:

Turns out my stock devices are pic18f26k20's, sounds like theres more special functions on this device, I'm gonna blow one anyway and see if it'll work.
Sim is not an option I only have the hex file, this is not my work this time.

Click to expand...

I see.

I would check basically two things:

The configuration in both micros is the SAME. If so,

The capabilities of the replacement are higher what would discard any unexpected limitation.

But, as you say, I would try one in real life. Buena suerte.