Wake up from Low Power Modes using the TSI on KL25Z (Mask 2N97F)

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Wake up from Low Power Modes using the TSI on KL25Z (Mask 2N97F)

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ashwinnair
Contributor I

I am trying to implement an application on the FRDM KL25Z which goes to deepsleep() when idle and has to be woken up by using the TSI module on touch. I am using the hardware trigger from the LPTMR to trigger the TSI scan during RUN mode and TSI is configured to give an OUT OF RANGE interrupt. However once the module enters deepsleep it does not wakeup. (The wakeup has been configured to be from TSI module by setting LLWU_ME to 0x04)

While digging through the errata for the 2N97F Mask I saw the following mentioned about the TSI : 

pastedImage_1.png

Does this mean that the OUT OF RANGE interrupt can never be used to wake up the KL25 from low power mode? 

Also the errata that I had referred to was a document released in 2013, is there a new revision for the same where there are any new workarounds?

Thanks,

Ashwin

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Hui_Ma
NXP TechSupport
NXP TechSupport

Hi

First of all, sorry for the later reply.

I had checked this issue with Kinetis product team, there with another TSI errata not added at mask set 2N97F errata file. Please check below picture for the detailed info:

pastedImage_1.png

The original errata file could be downloaded from here.

This errata e6060 also exists at KL25 chip.

Sorry for that may bring any inconvenience to you.

best regards,

Mike

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