How to configure unused LF pins?

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sunrome

Joined Jul 21, 2015
1
I designed TPMS sensor on freescale FXTH87 and I don't want to use LF receiver, so I have to configure LF pins to avoid a floating input. What I have to do? leave pin not connected or connect to Vss, or something else?

from datasheet:
Each LF[A:B] pin will always have an impedance of approximately 500 kOhm to VSS due to the LFR input circuitry. The LFA/LFB
pins are used by the LFR when the LFEN control bit is set and are not functional when the LFEN control bit is clear.

Really appreciate your help.
 

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