Can I connect slow 5V signals using a series resistor of about 1 k to the XMOS' I/O ports? Will the clipping diodes be enough in this case to protect the inputs? It's just a test circuit, nevertheless I don't want to blow up my XMOS.
Regards,
Thomas
Interface slow 5V signals
- leon_heller
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Inputs are 5V compatible, see the data sheet.
Only XS1-G devices have 5V tolerant inputs. XS1-L parts have a maximum input voltage of 3.6V (~3.3+10%).leon_heller wrote:Inputs are 5V compatible, see the data sheet.
As Leon says, check the datasheets.
- leon_heller
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I checked the data sheet I had for the XS1-L1, and that gave 5.5V as the maximum. The latest version gives 3.6V.
A resistor should be OK for the XS1-L1, I've seen one used with other devices.
A resistor should be OK for the XS1-L1, I've seen one used with other devices.
Thanks!
There must be a reason they corrected it down to 3.6 V in the latest revision :) I'll add another resistor per pin to build a voltage divider, just to be on the safe side.
There must be a reason they corrected it down to 3.6 V in the latest revision :) I'll add another resistor per pin to build a voltage divider, just to be on the safe side.