Pico-D4 useage of IOs 7/9/10/11

[rfleming]

Hi All,

I have been wondering about the application for the usage for these IOs on the device. Testing them individually I found that they have a default pullup of ~47k that will always be present unless you set them to output low. IO 9/10 also work with SPI as a clk or mosi. They cannot hold their IO levels during light sleep and sometimes like when I set IO11 as an output on boot, it will restart the device.

So I am wondering if anyone has had much experience with these ios and can suggest what I can/can't use them for etc. The microcontroller itself has a limited IOs so ever pin counts

Cheers,
Ryan.

[WiFive]

6,7,8,11,16,17 are used for internal flash so shouldn't be used

[rfleming]

So IO 9/10 can be used freely with no constraints? (besides the above I mentioned)?