Can LPC55S69 run 1.8V GPIO/UART ?

dav1 — Fri, 15 Apr 2022 14:07:54 GMT

hi,

The datasheet for LPC55S69JEV98K states VDD 'main io supply', min 1.8V

does that mean 1.800V ?
i.e. most buck regulators would have about 3-5% output tolerance, meaning the VDD rail and serial IO might as well be 1.72V.

Is the datasheet correct, i.e. 1.8V is absolute minimum? or can you run the LPC55-series safely in a 1.8V system?

thx

Re: Can LPC55S69 run 1.8V GPIO/UART ?

ZhangJennie — Tue, 19 Apr 2022 09:14:09 GMT

Hi dav1

Yes LPC55S69 VDD absolute minimum is 1.8V. We can guarantee the part work safe with 1.8V.

We can't guarantee operation normal with 1.72V VDD.

Thanks,

Jun Zhang