Hi MIKE,
Sorry for the late reply.
I recommend you use Kinetis SDK v2 instead of KSDK1.3.
You can test the UART interrupt example in SDK_2.0_MKL16Z256xxx4 folder.

Search 'KL16' then select your MCU.(for example: MKL16Z256xxx4).

After specify additional configuration settings, you can download SDK_2.0_MKL16Z256xxx4.

You can getting start with KSDK and KDS from reading below:
"How to start with KSDK" and "KDS Document List".
Best Regards,
Robin
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