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PIC 18fxx31 register address

 
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raf



Joined: 13 Mar 2005
Posts: 3
Location: Paris

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PIC 18fxx31 register address
PostPosted: Sun Mar 13, 2005 1:04 pm     Reply with quote

I'm using a 18f4431 and when I read the 18fxx31 datasheet I've noticed that there was different adresses for the same register (http://ww1.microchip.com/downloads/en/DeviceDoc/39616b.pdf).
For example, the register SSPCON had the address FC6h at the page 67 (register map) and on the page 215 (register 18-2) it had the address 14h.

With Mplab the first address seems to work but in every application I've seen evrybody use the second. What address should I use?

Am I going crazy or is it totally normal and I don't know how to read a datasheet ?
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Sun Mar 13, 2005 3:03 pm     Reply with quote

No, I saw it too, when I was recently working on a 18F4431 problem
for someone on this board. What you're seeing is laziness by the
tech writer at Microchip. They must have copied a section of the
SSPCON data sheet from a 16F series PIC where the SSPCON address
is normally at 0x14.

Do you want to report this error to them ? If so, go here
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=676
In the section under Literature Requests, there's a link to send an
email to their technical document team to report errors.
raf



Joined: 13 Mar 2005
Posts: 3
Location: Paris

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PostPosted: Tue Mar 15, 2005 2:37 am     Reply with quote

ok thanks you of your quick reply
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