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for flexbus

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okubohitoshi
Contributor I

use device: MK20FN1M0VLQ12

It is the question about the data sheet ("Document Number: K20P144M120SF3 Rev. 4, 10/2012").

In flexbus, how many seconds (Minimum) is time from the rise of CLK signal to a rise of control signal (FB_CS,FB_OE)?

About the time from CLK_RISE to FB_CS(FB_OE)_RISE, is it bigger than a demand value of the hold time for data (datasheet  Page 43 Table 26 and 27. "FB5") ? I think that I am equivalent to FB3, and is it right?

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Hui_Ma
NXP TechSupport
NXP TechSupport

About Flexbus timing, the time from CLK_RISE to FB_CS (control signals) is covered by the FB3 spec, the time from CLK_RISE to input Date hold time spec is FB5.

FYI: The latest MK20FN1M0VLQ12 datasheet is Rev.5, you can find it from below link:

http://cache.freescale.com/files/microcontrollers/doc/data_sheet/K20P144M120SF3.pdf

Wish it helps.

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