K10 QFN32

[tahirmahmood]

Hello,

Where should I connect the thermal pad of the K10 QFN 32 package. Should I connect it to ground plane because data sheet does not mention any thing. If I do not use both RTC and normal external oscillators and just use the internal clock then where should I connect these pins. Can I leave them unconnected? Is there any performance difference if I do not use external crystal oscillator?

BOWA-electronic GmbH & Co. KG

Tahir Mahmood

MSc.

Entwicklung Elektronik

BOWA-electronic GmbH & Co. KG

Heinrich-Hertz-Straße 4-10

D-72810 Gomaringen

Phone:

+49-7072-6002-925

Fax:

+49-7072-6002-3925

E-mail:

Tahir.Mahmood@bowa.de<mailto:tahir.mahmood@bowa.de>

Internet:

bowa.de<http://www.bowa.de/>

BOWA-electronic GmbH & Co. KG mit Sitz in 72810 Gomaringen

Geschäftsführer: Jens Kröber, Martin Heinrich

Registergericht: Stuttgart, HRA 381478

Umsatzsteuer ID Nr.: DE240259728

[vicentegomez]

Hi Tair

For the thermal pad please check the application note AN1902​

For the pins the recomendation is For the Kinetis family it is recommended to leave unused pines floating and configure them as disabled.

Please also check the AN4470​

Is there any performance difference if I do not use external crystal oscillator?

the difference is that with external oscillator you can have a more accurate clock frequency if you use a better oscilator than the internal clock, also in some configuration you will have a low power consumption

Regards

Vicente Gomez