A method and circuitry for generating a trigger signal based on an oscillation signal and associated non-transitory computer program product are provided. The method includes following steps. Firstly, a calibration value is obtained according to a reference frequency and a frequency of the oscillation signal, and a counting value is gradually altered from a first initial value to a breakpoint value. Secondly, the counting value is updated to a second initial value when the counting value is equal to the breakpoint value. Then, the counting value is gradually altered from the second initial value to a final value, and the trigger signal is generated when the counting value is equal to the final value.

An oscillator module used with a plurality of power sources includes an oscillator unit, a clock monitor unit (CMU), a software module and a digital calibration circuit. The oscillator unit generates a clock signal. The CMU is coupled to the oscillator unit, determines whether an amplitude of the clock signal exceeds a predetermined threshold, and outputs an alarm signal if the amplitude of the clock signal is lower than the predetermined threshold. The software module is coupled to the CMU, and receives the alarm signal to output a calibration signal. The digital calibration circuit is coupled to the oscillator and the software module, and outputs a control signal in response to the clock signal and the calibration signal, adjusting the plurality of power sources to modify the clock signal.

An example semiconductor chip includes analog circuits, digital circuits, and a digital input port. The digital input port is to receive an input signal. The analog circuit is to receive the input signal from the digital input port and produce a digital signal based on the input signal.

A technique includes using a first oscillator to clock operations of a radio of an integrated circuit (IC). The technique includes intermittently using the first oscillator to frequency tune a second oscillator of the IC.

A programmable device includes reconfigurable analog circuitry, reconfigurable digital circuitry, a plurality of input/output (I/O) blocks, and a global mapping system. The global mapping system is configured to selectively couple the plurality of I/O blocks with analog functional units of the reconfigurable analog circuitry and with digital functional units of the reconfigurable digital circuitry.

Embodiments of the present invention are directed to a microcontroller device having a microprocessor, programmable memory components, and programmable analog and digital blocks. The programmable analog and digital blocks are configurable based on programming information stored in the memory components. Programmable interconnect logic, also programmable from the memory components, is used to couple the programmable analog and digital blocks as needed. The advanced microcontroller design also includes programmable input/output blocks for coupling selected signals to external pins. The memory components also include user programs that the embedded microprocessor executes. These programs may include instructions for programming the digital and analog blocks on-the-fly, e.g., dynamically. In one implementation, there are a plurality of programmable digital blocks and a plurality of programmable analog blocks.

Embodiments of the present invention are directed to a microcontroller device having a microprocessor, programmable memory components, and programmable analog and digital blocks. The programmable analog and digital blocks are configurable based on programming information stored in the memory components. Programmable interconnect logic, also programmable from the memory components, is used to couple the programmable analog and digital blocks as needed. The advanced microcontroller design also includes programmable input/output blocks for coupling selected signals to external pins. The memory components also include user programs that the embedded microprocessor executes. These programs may include instructions for programming the digital and analog blocks on-the-fly, e.g., dynamically. In one implementation, there are a plurality of programmable digital blocks and a plurality of programmable analog blocks.

A technique includes using a first oscillator to clock operations of a radio of an integrated circuit (IC). The technique includes intermittently using the first oscillator to frequency tune a second oscillator of the IC.

A method and circuitry for generating a trigger signal based on an oscillation signal and associated non-transitory computer program product are provided. The method includes following steps. Firstly, a calibration value is obtained according to a reference frequency and a frequency of the oscillation signal, and a counting value is gradually altered from a first initial value to a breakpoint value. Secondly, the counting value is updated to a second initial value when the counting value is equal to the breakpoint value. Then, the counting value is gradually altered from the second initial value to a final value, and the trigger signal is generated when the counting value is equal to the final value.

A crystal oscillator includes a current source that charges a capacitor. A charge on the capacitor is periodically injected into a crystal of the crystal oscillator. A switch couples the capacitor to the crystal and a timing circuit controls the switch to cause the charge to be injected beginning at approximately a peak of a crystal output signal. The timing circuit is configurable into a self-resonant mode for calibration of a delay through the timing circuit by coupling an output of the timing circuit to an input of the timing circuit. A comparator compares a magnitude of the crystal output signal to a reference voltage and supplies compare results to a gain control circuit. The gain control circuit adjusts the current from the current source to adjust the charge being injected into the crystal from the capacitor to thereby control the magnitude of the crystal output signal.