General description

UM0759

18/26

Doc ID 16058 Rev 2

Reverse key

The key only works at CLICKED (Rising edge), that is to say the un-clicked action (fall edge)

didn't change the direction status. When the "Reverse Key" was clicked, the DIR input signal

of L9958 becomes LOW.

From the GUI side, when "Reverse Key" was clicked, the "BREAK" or "Forward Key" was

reset, and the motor display field was shown as below:

Figure 17.

Reverse direction of motor control

Forward key

The key only works at CLICKED (Rising edge), that is to say the un-clicked action (fall edge)

didn't change the direction status. When the "Forward Key" was clicked, the DIR input signal

of L9958 becomes HIGH.

From the GUI side, when "Forward Key" was clicked, the "BREAK" or "Reverse Key" was

reset, and the motor display field was shown as below:

Figure 18.

Forward direction of motor control