Semiconductor integrated circuit and noncontact information...

Details Semiconductor integrated circuit and noncontact information... Semiconductor integrated circuit and noncontact information...

2005-04-12

2010-12-14

Le, Thien M (Department: 2887)

Registers

Records

Conductive

C340S502000

Reexamination Certificate

active

07850086

ABSTRACT:
The present invention extends the reading range between a contactless type information medium (semiconductor integrated circuit) and a reader/writer, which exchanges data in contactless communications with the contactless type information medium, and enables a stable data exchange even if the power supply voltage is lowered when data is returned from the contactless type information medium to the reader/writer. Specifically, when data is returned from the contactless type information medium, the data to be returned is held in the logic circuit section200capable of operating at a lower voltage than the non-volatile memory circuit section300, and the reset detection lower limit voltage to be used by the reset generating circuit160during the data-returning period is set to be lower than that during periods other than the data-returning period.

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European Search Report issued in European Patent Application No. 05730561.7, mailed Jun. 16, 2009.

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