topic Re: Un-bonded Pins in LPC Microcontrollers

Un-bonded Pins

bob_walker — Thu, 14 Sep 2017 18:36:05 GMT

LPC 8xx devices...

Does anyone know if it is possible to use unbonded pins for routing via the SWM block and various block inputs WITHOUT using existing bonded pins? Are these unbonded I/Os still available on packages with low pin count?

Re: Un-bonded Pins

kerryzhou — Fri, 15 Sep 2017 06:05:02 GMT

Hi Bob_walker,

Actually, SWM is defined the according internal block interface to the detail chip pin, PIO0_0 to PIO0_28.

What do you mean:unbonded I/O?

Do you mean? Take an example:

This pin don't have PIO0_20, but if you use SWM connect the internal block, various block, no external pin, but the internal different block will be connected.

This picture may help you to understand it.

Wish it helps you!

Have a great day,
Kerry

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Re: Un-bonded Pins

bob_walker — Fri, 15 Sep 2017 16:38:33 GMT

Kerry,

An un-bonded pin is the example you just gave. PIO0_20 does not exist on the package (un-bonded). However, it does exist on the chip. This is the answer I was looking for. Thanks.