Other

Renesas Technology Corp.

Hitachi Ulsi Systems Co., Ltd.

California Institute of Technology

Yuki Matsuda

Tadashi Oda

Takeo Kon

Minoru Kato

Kenya Otani

William A Goddard, Iii

Weiqiao Deng

Functional linkers or anchors interconnecting graphene-like carbon, such as nanotubes or graphite sheets, with a conducting material such as a metal, are shown, together with related structures, devices, methods and systems.

Functional anchors connecting graphene-like carbon to metal

In a nonvolatile memory in which a load on a boosting circuit changes according to the number of rewrite bytes, the boosting circuit is configured so as to perform voltage boosting at a relatively slow predetermined speed regardless of the number of rewrite bytes, whereby stress applied to each storage element is reduced and rewrite resistance is enhanced.

Nonvolatile memory with erasable parts

Nonvolatile memory with controlled voltage boosting speed

Nonvolatile memory

The invention facilitates to meet both of the mode of use that finds precedence in frequent rewrite to the nonvolatile memory and data retention during the power supply being cut off, and the mode of use that finds precedence in the data retention characteristic. The controller enables an information storage operation to the nonvolatile memory cells, by means of erase and write processing through boosting of the voltage applied to the nonvolatile memory cells and clamping of the boosted voltage, and performs a selection control that selects the application interval of the boosted voltage applied during the information storage operation and so forth. This selection control enables utilizing the nonvolatile memory cells as temporary rewrite areas, and facilitates to meet both of the mode of use that finds precedence in data retention during the power supply being cut off, and the mode of use that finds precedence in the data retention characteristic.

Nonvolatile memory, IC card and data processing system

Growing community of inventors

Pasadena, CA, United States of America

Yuki Matsuda