From the pico datasheet
https://datasheets.raspberrypi.com/pico ... asheet.pdf
"RUN is the RP2040 enable pin, and has an internal (on-chip) pull-up resistor to 3.3V of about ~50kΩ. To reset RP2040,
short this pin low."
If you have a spare GPIO on the pico, then use this to control the 23017 reset. Makes the reset condition independent from "power on" which is handy during code development.
There have been also reports on pico instabilities when connecting a reset button to RUN, guess with long wires. But connecting other devices, then this could introduce such instabilities.
One option would be to have an extra RC for the MCP32017 reset only.
https://datasheets.raspberrypi.com/pico ... asheet.pdf
"RUN is the RP2040 enable pin, and has an internal (on-chip) pull-up resistor to 3.3V of about ~50kΩ. To reset RP2040,
short this pin low."
If you have a spare GPIO on the pico, then use this to control the 23017 reset. Makes the reset condition independent from "power on" which is handy during code development.
There have been also reports on pico instabilities when connecting a reset button to RUN, guess with long wires. But connecting other devices, then this could introduce such instabilities.
One option would be to have an extra RC for the MCP32017 reset only.
Statistics: Posted by ghp — Fri Dec 27, 2024 6:06 pm