12F675 Datasheet

[geckogrotto]

I'm still trying to figure out how to read everything on the datasheets.
I was looking for the memory address on a 12F675 to write to. I searched the forum and found that its $C0 and it works... This helps me solve the current problem but where on the datasheet is that found so I can find it myself next time?


Thanks,
Daniel

[Darrel Taylor]

Hi Daniel,

What is it you're trying to write to?

Address $C0 is smack dab in the middle of Bank1 GPR's, which really points to $40 in Bank0.

There's no reason to be writing anything directly to that address.

I could understand if you were using that address to move the curson of an LCD display. But that's independant of the chip you're using.
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[geckogrotto]

Oh ok well that address I actually found on another thread tried it and it worked. Where does it start and where in the datasheet does it state it?

Thanks,
Daniel

[Darrel Taylor]

Look in section 2 (MEMORY ORGANIZATION)

Figure 2-2 shows the whole layout of GPR's and SFR's.
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[geckogrotto]

I have seen this figure and looked over it many times the problem is I don't really understand it. Maybe you could point me in the right direction for a better breakdown of what all that means?

[Darrel Taylor]

Well, other than a complete description of how microcontrollers work, I don't know what I could say that would help you out.

Each location shown in that table has a corresponding section in the datasheet. I guess you'll just need to spend some time reading it.

If you were to answer the question ...

What is it you're trying to write to?

I could go from there. But an all encompassing explanation is beyond the scope of this forum.