Aurix Micrcontroller crystal load capacitor

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abhishek-2138
Level 3
Level 3
First like received 10 likes given 10 replies posted

In the datasheet for AURIX TC364 MCU, can we disable the internal load capacitors.

abhishek2138_0-1676539100362.png

Its because if we add external load cap then external & internal load caps will be in parallel.

Or do we need to consider internal load cap while selecting external load capacitor & consider the parallel combination??

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1 Solution
Jeremy_Z
Moderator
Moderator
Moderator
1000 replies posted 250 sign-ins 100 likes received

Hi @abhishek-2138 ,

Thank you for your interest in Infineon's products and for the opportunity to serve you.
1) Can we disable the internal load capacitors?
-- Yes, of course.
2) Do we need to consider the internal load cap while selecting the external load capacitor & consider the parallel combination?
-- It's unnecessary to consider the internal load capacitance if you disable the feature.
Further, I'd like to suggest you refer to the AP56002_Crystal Oscillator Basics note to design an appropriate OSC circuit.

BR,

Jeremy

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1 Reply
Jeremy_Z
Moderator
Moderator
Moderator
1000 replies posted 250 sign-ins 100 likes received

Hi @abhishek-2138 ,

Thank you for your interest in Infineon's products and for the opportunity to serve you.
1) Can we disable the internal load capacitors?
-- Yes, of course.
2) Do we need to consider the internal load cap while selecting the external load capacitor & consider the parallel combination?
-- It's unnecessary to consider the internal load capacitance if you disable the feature.
Further, I'd like to suggest you refer to the AP56002_Crystal Oscillator Basics note to design an appropriate OSC circuit.

BR,

Jeremy