Radiofrequency-powered device, corresponding system and method

A device, comprising:

• a radiofrequency (RF) energy harvesting circuit configured to harvest RF energy from a radiofrequency signal and store the harvested RF energy in an energy storage component;
• an RF receiver configured to receive the radiofrequency signal, wherein the radiofrequency signal is modulated by a configuration data signal, and to extract configuration data from the configuration data signal;
• a configuration register that stores the configuration data and outputs the configuration data for controlling operational configuration of:
• a processing circuit, wherein the configuration data comprises firmware bits for configuring operation of the processing circuit;
• a sensor circuit having a sensing operation controlled by the configuration data;
• and
• a power management circuit that receives energy from the energy storage component and supplies power to the processing circuit and sensor circuit in response to the configuration data.

A device, comprising:

• a radiofrequency energy harvesting circuit configured to harvest radiofrequency energy from a radiofrequency signal and store the harvested radiofrequency energy in an energy storage component;
• processing circuitry powered from said energy storage component, said processing circuitry configured to perform actions in response to firmware;
• and
• a receiver circuit powered from said energy storage component and coupled to said radiofrequency energy harvesting circuit, said receiver circuit configured to receive a configuration data signal modulating said radiofrequency signal and extract circuit configuration data from the configuration data signal for application to program the firmware of the processing circuitry.

A device, comprising:

• a radiofrequency energy harvesting circuit configured to harvest radiofrequency energy from a radiofrequency signal and store the harvested radiofrequency energy in an energy storage component;
• a power management circuit coupled to said energy storage component;
• processing circuitry powered through said power management circuit from said energy storage component;
• and
• a receiver circuit powered from said energy storage component and coupled to said radiofrequency energy harvesting circuit, said receiver circuit configured to receive a configuration data signal modulating said radiofrequency signal and extract circuit configuration data from the configuration data signal for application to control power management settings of the power management circuit.

A device, comprising:

• a radiofrequency energy harvesting circuit configured to harvest radiofrequency energy from a radiofrequency signal and store the harvested radiofrequency energy in an energy storage component;
• user circuitry configured to be supplied with energy from said energy storage component and to operate in accordance with one of a plurality of configurations as a function of received user circuitry configuration data;
• and
• a receiver circuit coupled to said radiofrequency energy harvesting circuit and configured to receive a configuration data signal modulating said radiofrequency signal and extract the user circuitry configuration data from the configuration data signal received and supply the user circuitry configuration data to said user circuitry;
• wherein said configuration data signal comprises at least one of:
• a clock signal to clock operation of said user circuitry, and
• a latch enable signal to enable extraction of said user circuitry configuration data from the configuration data signal.