Abstract: An address generating circuit according to an embodiment includes a register that maintains a partition address set by a CPU, a comparator that determines whether a designated address designated by the CPU designates the interleaved area or the non-interleaved area, a selection signal generating unit that generates the selection signal based on a least significant bit of the designated address in a case of the interleaved area and generates the selection signal based on a high-order bit other than the least significant bit of the designated address in a case of the non-interleaved area, and a physical address generating unit that generates the physical address acquired by excluding the least significant bit from the designated address in a case of the interleaved area and generates the physical address acquired by excluding the high-order bit from the designated address in a case of the non-interleaved area.

Abstract: An address generating circuit according to an embodiment includes a register that maintains a partition address set by a CPU, a comparator that determines whether a designated address designated by the CPU designates the interleaved area or the non-interleaved area, a selection signal generating unit that generates the selection signal based on a least significant bit of the designated address in a case of the interleaved area and generates the selection signal based on a high-order bit other than the least significant bit of the designated address in a case of the non-interleaved area, and a physical address generating unit that generates the physical address acquired by excluding the least significant bit from the designated address in a case of the interleaved area and generates the physical address acquired by excluding the high-order bit from the designated address in a case of the non-interleaved area.

Abstract: A random number generating circuit comprises: the seed generating circuit which generates a seed; and a pseudo random number circuit which generates pseudo random numbers based on the seed generated by the seed generating circuit. The seed generating circuit has: an oscillating circuit which oscillates continuously or intermittently, and which outputs a digital data sequence; a smoothing circuit which outputs time series data by controlling appearance frequencies of “0” and “1” in the digital data sequence outputted from the oscillating circuit; and a postprocessing circuit which generates one-bit seed by a computation using a plurality of bits included in the time series data.

Abstract: A contactless IC card includes: an antenna configured to receive an electromagnetic wave and to induce an AC signal; a rectifier circuit configured to rectify an AC signal from the antenna; a demodulating circuit configured to demodulate received data from a rectified signal from the rectifier circuit; a carrier extraction circuit configured to extract a carrier from the AC signal or the rectified signal and to generate an operation clock; a return data generating unit configured to operate at the operation clock from the carrier extraction circuit and, after receiving received data from the demodulating circuit, output return data to a reader-writer; a modulating unit configured to load-modulate the carrier of the AC signal with the return data; and a sensitivity control unit configured to perform control so as to increase carrier extraction sensitivity of the carrier extraction circuit during a return period to the reader-writer.

Abstract: A semiconductor storage device includes an arithmetic operation unit configured to perform an arithmetic operation of generating a different error detecting code depending on the information of a memory address, using the data and the information of the memory address in a memory cell into which the data is written, and a storage unit configured to store the data and the error detecting code in the memory cell.

Abstract: A random number generating circuit comprises: the seed generating circuit which generates a seed; and a pseudo random number circuit which generates pseudo random numbers based on the seed generated by the seed generating circuit. The seed generating circuit has: an oscillating circuit which oscillates continuously or intermittently, and which outputs a digital data sequence; a smoothing circuit which outputs time series data by controlling appearance frequencies of “0” and “1” in the digital data sequence outputted from the oscillating circuit; and a postprocessing circuit which generates one-bit seed by a computation using a plurality of bits included in the time series data.

Abstract: A semiconductor storage device includes: a memory configured to store data at a first address and store an error detecting code corresponding to the data at a second address which is set up in a predetermined relation with the first address and different from the first address; and an address storage portion configured to store information on address relation between the first address and the second address.

Abstract: A random number generating circuit comprises: the seed generating circuit which generates a seed; and a pseudo random number circuit which generates pseudo random numbers based on the seed generated by the seed generating circuit. The seed generating circuit has: an oscillating circuit which oscillates continuously or intermittently, and which outputs a digital data sequence; a smoothing circuit which outputs time series data by controlling appearance frequencies of “0” and “1” in the digital data sequence outputted from the oscillating circuit; and a postprocessing circuit which generates one-bit seed by a computation using a plurality of bits included in the time series data.

Abstract: A random number generating circuit comprises: the seed generating circuit which generates a seed; and a pseudo random number circuit which generates pseudo random numbers based on the seed generated by the seed generating circuit. The seed generating circuit has: an oscillating circuit which oscillates continuously or intermittently, and which outputs a digital data sequence; a smoothing circuit which outputs time series data by controlling appearance frequencies of “0” and “1” in the digital data sequence outputted from the oscillating circuit; and a postprocessing circuit which generates one-bit seed by a computation using a plurality of bits included in the time series data.