What is the most current K20 (Teensy 3.1 CPU) reference manual?

[JBeale]

This pdf document "K20 Sub-Family Reference Manual" on the PJRC website https://www.pjrc.com/teensy/K20P64M72SF1RM.pdf
says "Document Number: K20P64M72SF1RM Rev. 1.1, Dec 2012" and is 1377 pages long. In a footer on every page it says "Preliminary General Business Information" in red letters.

By contrast, this pdf document "K20 Sub-Family Reference Manual" from Freescale
http://cache.freescale.com/files/32bit/doc/ref_manual/K20P64M50SF0RM.pdf
"Document Number: K20P64M50SF0RM Rev. 2, Feb 2012" (1227 pages) has an earlier calendar date, but a later revision number, and it does not say "Preliminary" anywhere.

Which one of these documents should I be referring to?

 

[HWGuy]

The first one (K20P64M72SF1RM) is the correct reference manual. The K20P64M50SF0RM is not for the MK20DX256VLH7 from the Teensy 3.1/3.2.

 

[JBeale]

Thanks, I was confused by the fact they had the same title. So the latest document is almost 3 years old, and it's still "Preliminary" ?

 

[HWGuy]

This is the most current reference manual for the Teensy 3.1/3.2 mcu: http://cache.freescale.com/files/32bit/doc/ref_manual/K20P64M72SF1RM.pdf (note: same document id as the one from pjrc.com: K20P64M72SF1RM)

Some time ago I did a cross check between the K20P64M72SF1RM from pjrc and freescale: the "Preliminary General Business Information" in red is the only difference.

 

[JBeale]

Thanks HWGuy, sounds like I do have the latest info then.