MPR121

Latency of a digital input sent from a digital pin on a MPR121

Measured by connecting the MPR121 to a Pi Pico, toggling a digital pin on the MPR121, and timing how long it takes that signal to reach a target device over USB from the Pi Pico.

microcontroller	Pi Pico
firmware	new
controller	MPR121
poll rate	1 ms
min	0.48 ms
max	1.31 ms
avg	0.79 ms
stddev	0.24 ms
%on time	96%
%1f skip	4%
%2f skip	0%
%3f skip	0%

Note that in the below graph, you can click on legends to show and hide different controllers when comparing.