Patent ID: 8115632

Claim:
A semiconductor chip for an RFID tag, comprising: a wireless transceiver; at least one sub-circuit comprising one of a random number generator, a demodulator receive path, a nonvolatile memory bank, a modulator, an encryptor, a decryptor, an oscillator, a sense amplifier, a rectifier, and a charge pump; and a processing block circuitry configured to; receive, from a reader, an instruction encoded in a TUNE command, the instruction associated with an aspect of an environment sensed by the reader, and execute the instruction causing circuitry coupled to a power management unit to perform at least one of: turn the at least one sub-circuit on, turn the at least one sub-circuit off, alter a bias current within the at least one sub-circuit, alter a bias voltage within the at least one sub-circuit, and adjust a threshold within the at least one sub-circuit.