AM3358: I2C Input Timings - spike requirement?

user6132308

Part Number: AM3358

hello

I'm verifying the I2C Input timing of AM3358, could you please help to comment (or confirm) my understanding of spike requirements?

1. it's equivalent to the 'Glitch'.

2. it's no matter if the spike duration less than 50ns.

3. it's no matter if the voltage level of spike do not exceed Low-Level input voltage threshold(0.8V).

Best Regards

TC Liu

0 user6132308 over 3 years ago

The screenshots does not seem to be displayed correctly, please refer to page189-190 of AM335x Sitara™ Processors datasheet (Rev. L) if needed.

0 PaulM over 3 years ago

1. it's equivalent to the 'Glitch'.

Spike is the term used by the I2C-bus Specification. It can be considered a glitch.

2. it's no matter if the spike duration less than 50ns.

Correct, the I2C-bus Specification defines that spikes 0-50ns must be suppressed

3. it's no matter if the voltage level of spike do not exceed Low-Level input voltage threshold(0.8V).

Spikes should not exceed the device limits.

-- Paul

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