K60 - ALTCLK source

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K60 - ALTCLK source

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herverogues
Contributor I

Bonjour, je travaille sur l'ADC d'un kinetis K60.

Je souhaite utiliser la source d'horloge ALTCLK.

Or je ne trouve nulle part d'où vient cette ALTCLK dans le manuel de référence K60P144M150SF3RM
Rev. 3, November 2014 + K60P144M150SF3RM Rev. 4, 10/2015.

Où puis-je trouver l'information ?

Cordialement,

H. Rogues.

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Robin_Shen
NXP TechSupport
NXP TechSupport

Hello,

From "37.4.2 Clock select and divide control" you can see "ALTCLK: As defined for this MCU. See the chip configuration information."

37.4.2 Clock select and divide control.png

Then we can find the the ALTCLK is connected to OSC0ERCLK.

3.7.1.11 Alternate clock.png

The OSC0ERCLK is system oscillator output sourced from OSC0CLK.

Figure 5-1. Clocking diagram.png

The "6.3.2 Oscillator electrical specifications" can be found in datasheet(K60P144M150SF3).

6.3.2.2 Oscillator frequency specifications.png

Best Regards,

Robin

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