topic Re: i.MX8M mini SW calibration issue in i.MX Processors

i.MX8M mini SW calibration issue

Tori-san — Fri, 09 Apr 2021 09:10:28 GMT

Hello, According to the IMX8MMRM.pdf clause 5.4.5, software calibration method use Tcalib as part of the alpha. What means Tcalib in denominator of alpha? Is it a mistake in TE2? Tcalib_SW = alpha x (Tsense - TE1) + 25 alpha = (85-25)/(Tcalib - TE1)

Re: i.MX8M mini SW calibration issue

Yuri — Tue, 13 Apr 2021 07:01:25 GMT

@Tori-san
Hello,

yes, formula is incorrect (misprint), if Tcalib is not measured at 85 C.

Regards,
Yuri.

Re: i.MX8M mini SW calibration issue

Tori-san — Fri, 16 Apr 2021 02:31:48 GMT

Hi Yuri, Thank you for your reply. I think the following formula is also correct but how do you think of it? Tcalib_SW = ((85-25)/(TE2-TE1)) x (Tsense - TE2) + 85 Best regards, Tori-san.

Re: i.MX8M mini SW calibration issue

Yuri — Fri, 16 Apr 2021 07:30:43 GMT

@Tori-san
Hello,

yes, correct.

Regards,
Yuri.