What is a slow clock oscillator embedded microprocessor (MPU)

Status
Not open for further replies.
N

newbie_hs

Full Member level 2
Joined
Mar 4, 2023
Messages
129
Helped
1
Reputation
2
Reaction score
1
Trophy points
18
Activity points
1,023
I am using SAMA5D27C-D1G-CU in my design. In the signal description I can see that it has two oscillators.
Main oscillator and slow clock oscillator. Please see the image below.
I have couple of questions.
  • What is the difference between main oscillator and slow clock oscillator.
  • Why we need a main oscillator and slow clock oscillator?
  • Will the IC work without slow clock oscillator?
  • What is the purpose of slow clock oscillator?
 

Sort by date Sort by votes
Hi,

You posted the same questions in the Microchip folrum...

******

There is a whole section "Slow Clock Controller (SCKC)" in the datasheet.
Read it.
The 4 lines of the description covers all basics one needs to know.

Main Oscillator --> read section "Main Clock"

Will the IC work without slow clock oscillator? --> Yes.

Klaus
 

Upvote 1 Downvote
Page 370 of the data sheet.

It is for connecting a low frequency resonator/crystal or external low frequency clock to drive the RTC. It can also be used to put the IC into low power mode where current consumption is minimized but it is able to recognize an event that switches it to full speed when necessary.

Brian.
 
Upvote 1 Downvote
newbie_hs said:
I am using SAMA5D27C-D1G-CU in my design. In the signal description I can see that it has two oscillators.
Click to expand...
Actually four oscillators, fast and slow crystal oscillator mentioned in your post, in addition fast and slow internal RC oscillator.
 

Upvote 1 Downvote
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…