Abstract:
A variable frequency clock generator. In aspects, a clock generator includes a droop detector circuit configured to monitor a voltage supply to an integrated circuit. If the supply voltage falls below a specific threshold, a droop voltage flag may be set such that a frequency-locked loop is triggered into a droop voltage mode for handling the voltage droop at the supply voltage. In response, a current control signal that is input to an oscillator that generates a system clock signal is reduced by sinking current away from the current control signal to the oscillator. This results in an immediate reduction on the system clock frequency. Such a state remains until the voltage droop has dissipated when the current path is removed for sinking some of the current.
Abstract:
An electronic assembly for iontophoresis transdermal delivery of at least one drug includes an input mechanism configured to receive at least one parameter for iontophoresis transdermal delivery of the at least one drug. The electronic assembly further includes a controller configured to select current intensity and a voltage modulation based on the at least one parameter. The controller is further configured to generate a voltage waveform based on the selected current intensity for a drug delivery period.