Are "I/O Characteristics" also applied to input pads ?

Discussion around product based on ARM Cortex M4 core.

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jvb_s
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Joined: Thu Dec 04, 2014 2:49 pm

Are "I/O Characteristics" also applied to input pads ?

Fri Dec 05, 2014 5:15 pm

Hi,

This is a question about AC Characteristics of I/O pads (SAM4S and other products). In the I/O characteristics states "Pin Group x Maximum Output Frequency": is this limitation also applied when the I/O is configured as an input ?

It doesn't make much sense for me, but for example in 44.12.3.1 Maximum SPI frequency of SAM4S datasheet the SPCK max freq in Slave Read Mode (input) is related with the SPCK pad limit.

Thank you in advance.

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