Nonvolatile semiconductor memory
AssigneeNEC Electronics Corporation
InventorsKiyokazu Hashimoto, Hiroshi Sugawara
Life of this patent
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Abstract
The nonvolatile semiconductor memory includes a plurality of memory devices for storing data, a write circuit for supplying a high voltage for data writing, a plurality of selectors connected between the write circuit and the plurality of memory devices, for selecting one from the plurality of memory devices; and a control circuit for selecting one from the plurality of selectors, inputting a control voltage to a control terminal of the selected selector, and setting a write voltage for the memory device according to the control voltage.
Claims8
Nonvolatile semiconductor memory comprising:
- a plurality of memory devices for storing data;
- a write circuit for supplying a high voltage for data writing;
- a plurality of selectors connected between the write circuit and the plurality of memory devices, for selecting one from the plurality of memory devices;
- and
- a control circuit for selecting one from the plurality of selectors, inputting a control voltage to a control terminal of the selected selector, and setting a write voltage for the memory device according to the control voltage.
Nonvolatile semiconductor memory comprising:
- a write circuit for receiving a boosted voltage and outputting a write voltage;
- a plurality of memory devices for storing data;
- and
- a plurality of selectors connected between the write circuit and the plurality of memory devices, for selecting one from the plurality of memory devices,
- wherein, in data writing, a voltage lower than the write voltage is supplied to a control terminal of a selector selected from the plurality of selectors, and the voltage is supplied to a drain of the memory devices through the selected selector so as to select one from the memory devices.
Nonvolatile semiconductor memory comprising:
- a plurality of memory devices for storing data;
- a write circuit for supplying a high voltage for data writing;
- first and second selectors connected between the write circuit and the plurality of memory devices, from which a plurality of the selectors are selected in data writing so as to select one from the plurality of memory devices;
- and
- a control circuit for controlling a drain voltage of the selected memory device so as to be constant regardless of a distance between the plurality of memory devices and the write circuit.
Dependencies are inferred from the claim text.