Power-on reset apparatus, systems, and methods
AssigneeSynopsys, Inc.
InventorCong Khieu
Life of this patent
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Abstract
Apparatus, systems, and methods may include providing a power-on reset function to many types of receiving circuitry, including processors, memories, and radio frequency identification (RFID) tag processing circuitry. Thus, the power-on reset function may be realized by applying a supply voltage to a power-on reset circuit coupled to the processing circuit of an RFID tag. Additional activity may include sensing a first current substantially independent of the supply voltage, sensing a second current substantially dependent on the supply voltage, and indicating a power-on reset condition based on a comparison between the first current and the second current. Additional apparatus, systems, and methods are disclosed.
Claims16
An integrated circuit chip, comprising:
- an independent current circuit to provide a current substantially independent of a supply voltage;
- a dependent current circuit to provide a current substantially dependent on the supply voltage;
- and
- an output circuit to provide a power-on reset indication based on a comparison between the current substantially dependent on the supply voltage and the current substantially independent of the supply voltage.
An article comprising a machine-readable memory containing thereon instructions which, if executed by mask making machinery as instructions for processing a semiconductor wafer, an integrated circuit will result on the wafer, comprising:
- an independent current circuit to provide a current substantially independent of a supply voltage;
- a dependent current circuit to provide a current substantially dependent on the supply voltage;
- and
- an output circuit to provide a power-on reset indication based on a comparison between the current substantially dependent on the supply voltage and the current substantially independent of the supply voltage.
Dependencies are inferred from the claim text.