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KSun.11
Associate II
March 20, 2020
Question

Delay from CKT_EN to CK_CNT

  • March 20, 2020
  • 1 reply
  • 3281 views

In the RM0008, Figure 120 on page 379, it says "as soon as the CEN bit is written to 1, the prescaler is clocked by the internal clock, CK_INT. " as shown below. However in the figure, the CK_CNT appears 2 cycles after the CEN bit became 1. Given the prescale ratio of 1, I wonder how to explain that there are 2 cycles before the CK_CNT follows the response.

Why two cycles?0693W000000UOJlQAO.png

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1 reply

waclawek.jan
Super User
March 21, 2020

IIRC this or similar question has been discussed here maybe last year, and even answered by ST insider. Try searching the forum.

JW

KSun.11
KSun.11Author
Associate II
March 21, 2020

Sorry, I am new to this forum. And I did search when key in my subject title, but maybe I searched for the wrong keywords.