topic Re: Multilink Connection Problem S12UF32 in S12 / MagniV Microcontrollers

Multilink Connection Problem S12UF32

srgrace09 — Fri, 20 Nov 2009 10:58:58 GMT

I have the BDM setup correctly (according to P&E) and the Multilink can't get the frequency of the device. Is anyone else having a problem, or do I need to contact P&E directly?

Thanks for any help.

Re: Multilink Connection Problem S12UF32

srgrace09 — Sun, 22 Nov 2009 15:28:03 GMT

I am using Rev.A of the P&E Multilink. I had it working earlier (with an IO_DELAY_CNT of 16). After trying to install a program onto it, I believe the secure bits (bytes) were written, and from what P&E said, this is the only chip that can't be unsecured? I'm in a real bind, and need an answer quickly. Is there a way I can unsecure it?

Re: Multilink Connection Problem S12UF32

kef — Sun, 22 Nov 2009 15:44:53 GMT

Did you look at UF32 erratas? If not, then read maskset number from your chip case, like 1L47S, and go here

http://www.freescale.com/webapp/sps/site/prod_summary.jsp?ProdMetaId=PID%2FDC%2FS12UF&isAdvanceSearch=false&showCustomCollateral=false&RELEVANCE=true&fromTrng=false&fromPSP=true&showAllCategories=false&fpsp=1&SelectedAsset=Documentation&&assetLocked=false&leftNavCode=1&assetLockedForNavigation=true&code=S12UF&isResult=false&componentId=2&searchSessionId=15d73e21258875597248.0&fromDAP=false&fromWebPages=false&tab=Documentation_Tab&isTree=false&isFromFlex=false&isComparison=false&fromASP=false&Documentation=Documentation/10510Ksd9lL%60%60Errata&

MUCts01498 errata has YES in workaround column, but in fact you can't unsecure secured chip over BDM.

Re: Multilink Connection Problem S12UF32

srgrace09 — Sun, 22 Nov 2009 15:48:55 GMT

Thanks for the input! I'll look at it and see what I can do with it. Luckily I have a backup chip for a case like this, so now I know how to get around this silly issue.