A piezoelectric circuit comprising: a piezoelectric actuator for generating a sensing signal in response to a force application, and for generating a haptic response in response to a haptic voltage signal; a driver circuit for generating the haptic voltage signal in response to a wake-up signal; a wakeup circuit that does not draw power when force is not applied to the piezoelectric actuator comprising: a capacitor (c1) coupled to the piezoelectric actuator and the driver circuit ; a transistor (m1) including a first gate terminal capacitively coupled via the capacitor (c1) to the piezoelectric actuator for receiving the sensing signal, a second drain or source terminal (22 or 23) connected to a voltage source (Vc), and a third source or drain terminal (22 or 23) connected to ground, wherein the transistor (m1) conducts when the sensing signal is valid; and an output connected to the second drain or source terminal (22 or 23) for providing the wake-up signal to the driver circuit when the transistor (m1) conducts; and a feedback system including a switch providing a path to ground or the voltage source (Vc) in between the capacitor (c1) and the first gate terminal to disable the transistor (m1), wherein the switch is closed after the wake-up signal has been detected protecting the transistor (m1) from the haptic voltage signal or any voltage signal high enough to damage the transistor (m1). a piezoelectric actuator for generating a sensing signal in response to a force application, and for generating a haptic response in response to a haptic voltage signal; a driver circuit for generating the haptic voltage signal in response to a wake-up signal; a wakeup circuit that does not draw power when force is not applied to the piezoelectric actuator comprising: a capacitor (c1) coupled to the piezoelectric actuator and the driver circuit ; a transistor (m1) including a first gate terminal capacitively coupled via the capacitor (c1) to the piezoelectric actuator for receiving the sensing signal, a second drain or source terminal (22 or 23) connected to a voltage source (Vc), and a third source or drain terminal (22 or 23) connected to ground, wherein the transistor (m1) conducts when the sensing signal is valid; and an output connected to the second drain or source terminal (22 or 23) for providing the wake-up signal to the driver circuit when the transistor (m1) conducts; and a capacitor (c1) coupled to the piezoelectric actuator and the driver circuit ; a transistor (m1) including a first gate terminal capacitively coupled via the capacitor (c1) to the piezoelectric actuator for receiving the sensing signal, a second drain or source terminal (22 or 23) connected to a voltage source (Vc), and a third source or drain terminal (22 or 23) connected to ground, wherein the transistor (m1) conducts when the sensing signal is valid; and an output connected to the second drain or source terminal (22 or 23) for providing the wake-up signal to the driver circuit when the transistor (m1) conducts; and a feedback system including a switch providing a path to ground or the voltage source (Vc) in between the capacitor (c1) and the first gate terminal to disable the transistor (m1), wherein the switch is closed after the wake-up signal has been detected protecting the transistor (m1) from the haptic voltage signal or any voltage signal high enough to damage the transistor (m1). <EOS>