Announcements

Equip yourself to optimize AURIX™ MCUs for Evs at the EV Webinar. Click here to register.

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

AURIX™ Forum Discussions

User16082
Level 1
Level 1
Hi

We are unable to find informations about internal oscillator (RC or whatever) in SAL-TC222L-16F133N in datasheet, is there such thing implemented in that device? If it is, how oscillator source is choosen, I mean we have external crystal one, connected to XTAL1 and XTAL2, which one is default is such case? What should be the amplitude of our external crystal, currently we have like 0.6 Vp-p, is that fine?

Kind Regards,
Piotr
0 Likes
2 Replies
cwunder
Employee
Employee
25 likes received 25 solutions authored 100 sign-ins
The device will always start from the Back-up Clock is 100MHz OSC and you can find this information in section 3.8 Back-up Clock of the datasheet.
A configuration of the oscillator is always required before an external crystal / ceramic resonator could be used as clock source. For this start-up configuration two options are supported:
• Configuration via the Startup Software (SSW)
• Configuration after the execution of the SSW
0 Likes
User16082
Level 1
Level 1
Thanks for answer, it s working as you described
0 Likes