MKW41Z

[sheshnathchauha]

Hi all,

I am trying to interface a display using spi1 with MKW41Z Devlopment board.And it work at normal run mode properly but when i am trying it to run at very low power mode then it display very very slow(take about 19sec).so please give me suggetion for display within 3s in very low mode using spi1 . 

[IvanRuiz]

Hello,

When you are in Very Low Power Mode there are some restrictions in core/systems clocks which are described in chapter 5.5.2 VLPR mode clocking. The clock dividers cannot be changed while in VLPR mode for which you have to set them up prior to entering VLPR mode. These new values affect the module baud rate and clock delay generation (chapter 36.4.3).

Reference manual:

http://cache.nxp.com/assets/documents/data/en/reference-manuals/MKW41Z512RM.pdf?fsrch=1&sr=2&pageNum...

Regards,

Ivan.