EXTCLK MPC561

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EXTCLK MPC561

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christophe_c
Contributor I

Hello,

I use a MPC561 with a problem of startup.

The EXTCLK and JCOMP signals are not connected.

Can these unconnected signals generate a problem of startup ?

Thank you in advanced

Best regards

Christophe

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi @christophe_c 

there should be no problem with unconnected JCOMP. It is internally pulled down which enables BDM/Nexus pins instead of JTAG.

But unconnected EXTCLK could be an issue - if it is not used, it must be tied to GND.

Regards,

Lukas

 

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