Tohoku University

Canon Medical Systems Corporation

Akira Tamakoshi

Takahiro Hanyu

Tetsuo Endoh

Hideo Ohno

Masanori Natsui

Daisuke Suzuki

Hitoshi Yamagata

Hiroki Koike

Naoya Onizawa

Hiroyuki Fujita

Akira Mochizuki

The present invention provides an access controller, and a data transfer method. The access controller controls accesses to the MRAM by reading data in advance and backing up the data when data is to be read from the MRAM.

Device, sensor node, access controller, data transfer method, and processing method in microcontroller

The present invention provides a device with low power and high performance, which can be applied to sensor nodes, a sensor node using the same, an access controller, a data transfer method, and execute a processing method in a microcontroller. The device has: an MRAM; a non-volatile CPU configured to include a nonvolatile memory; a non-volatile FPGA-ACC configured to include a nonvolatile memory and execute a part of operations on the nonvolatile CPU; and a power-gating control unit that controls power supply to each memory cell in the MRAM, the non-volatile CPU, and the non-volatile FPGA-ACC. The device is further provided with an access controller that controls accesses to the MRAM by reading data in advance and backing up the data when data is to be read from the MRAM.

A random number generator according to one embodiment includes a write circuit, a read circuit, and a signal output circuit. The write circuit inverts magnetization of a magnetic layer of a magnetic tunnel junction element stochastically by supplying current to the magnetic layer. The read circuit reads the magnetization. The signal output circuit generates a random number on the basis of the magnetization read by the read circuit. The random number generator includes a sequence control circuit that controls the write circuit and the read circuit. The sequence control circuit regulates the write circuit to supply the current to the write circuit in a first period, and causes the read circuit to read the magnetization after the first period is finished and then a second period longer than the first period is elapsed.

Random number generator

A circuit design support system, a circuit design support method, a circuit design support program, and a recording medium having the program recorded thereon are provided by which a design can be performed in consideration of the stochastic operation of the stochastic operation element and the influence caused by the stochastic operation of the stochastic operation element on the operation reliability of the circuit can be evaluated.

System, method, and non-transitory computer readable recording medium storing a program recorded thereon for supporting a design of a circuit including a stochastic operation element

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Sendai, Japan

Akira Tamakoshi