IO multiplexing circuit driven by touch key and LED

The invention discloses an IO multiplexing circuit of a touch control key and an LED drive, the IO multiplexing circuit of the touch control key and the LED drive comprises an IO unit, an LED drive unit and a touch control key unit, the LED drive unit and the touch control key unit are respectively connected with the IO unit; the IO unit comprises an output pin and an input pin, the output pin is used for outputting an LED signal, and the input pin is used for receiving an external touch key signal; a TKTIME pin, an LED TIME pin and a REUSEN pin are arranged between the LED driving unit and the touch key unit, the IO multiplexing circuit of the touch key and the LED driver enables the LED driving unit and the touch key unit to occupy the IO unit in turn according to the level of the TKTIME pin and the level of the LED TIME pin, and the REUSEN pin is used for transmitting multiplexing signals. A large number of IO resources are saved by multiplexing the IO. 本发明公开了一种触控按键与LED驱动的IO复用电路，所述触控按键与LED驱动IO复用电路包括IO单元、LE