Abstract:
In one embodiment, an inductive/LC sensor device includes: - energy accumulation means (C ref ) for accumulating excitation energy, - an LC sensor (10) configured for oscillating energized by energy accumulated, - an energy detector (12) for detecting the energy accumulated on the energy accumulation means (C ref ) reaching a charge threshold, and - at least one switch (S1, S2) coupled with the energy detector (12) for terminating accumulating excitation energy for the sensor (10) on the energy accumulation means (C ref ) when the charge threshold is detected having been reached by the energy detector (12).
Abstract:
A digital circuit including combinational (10) and sequential (12) circuit elements is operable to selectively (14, VRAM_M) switch at least part (12a, 120) of the circuit elements (12) to operation as random access memory.
Abstract:
A clock generator in apparatus such as e.g. a microcontroller unit is calibrated by aligning at subsequent calibration times the frequency of a first clock (106) with respect to the frequency of a second clock (108) having a higher frequency accuracy than said first clock (106), with the frequency of the first clock (106) which h varies between subsequent calibration times. The frequency of the first clock (106) is aligned to a frequency which is offset by a certain amount with respect to the frequency of the second clock (108) in order counter frequency error which may accumulate over time due to the variation in the frequency of the first clock (106).
Abstract:
A method of interfacing a LC sensor (10) with a control unit (20) is described. Specifically, the control unit comprises a first (202) and a second (204) contact, wherein the LC sensor (10) is connected between the first (202) and the second (204) contact, and wherein a capacitor (C1) is connected between the first contact (202) and a ground (GND). In particular, in order to start the oscillation of the LC sensor, the method comprising the steps of: - during a first phase, connecting the first contact (202) to a supply voltage (VDD) and placing the second contact (204) in a high impedance state, such that the capacitor (C1) is charged through the supply voltage (VDD); - during a second phase (2004), placing the first contact (202) in a high impedance state and connecting the second contact (204) to the ground (GND), such that the capacitor (C1) transfers charge towards the LC sensor (10); and - during a third phase (2006), placing the first contact (202) and the second contact (204) in a high impedance state, such that the LC sensor (10) is able to oscillate.