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Passive contactless integrated circuit comprising a flag for monitoring an erase/programming voltage

  • US 8,410,910 B2
  • Filed: 03/06/2008
  • Issued: 04/02/2013
  • Est. Priority Date: 09/06/2005
  • Status: Active Grant
First Claim
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1. A passive contactless integrated circuit, comprising:

  • an electrically programmable non-volatile data memory;

    a charge accumulation booster circuit to supply a high voltage sufficient to write data in the memory;

    a volatile memory cell to store an indicator flag;

    means for modifying the indicator flag when the high voltage reaches a threshold for a first time after activating the booster circuit; and

    a switch circuit coupled between the charge accumulation booster circuit and the non-volatile data memory to apply the high voltage to the non-volatile data memory as long as the high voltage has reached the threshold at least once after activating the charge accumulation booster circuits.

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