Back to results
US 12,586,612 B2Granted
Semiconductor memory device
AssigneeKioxia Corporation
InventorsYasufumi Kajiyama, Masaru Koyanagi
Life of this patent
Estimating the term…
Abstract
A semiconductor memory device according to the present disclosure includes a memory cell array (110, 210), an input/output circuit (23) that inputs/outputs a signal from/to the memory cell array, and a temperature acquiring circuit (29) that generates temperature information according to the temperature of the memory cell array, and corrects the characteristics of the input/output circuit based on the temperature information.
Claims10
A semiconductor memory device, comprising:
- a terminal for input/output;
- a memory cell array;
- an input/output circuit that inputs/outputs a signal between the terminal for input/output and the memory cell array;
- a termination circuit that is connected to the terminal for input/output and in which a circuit characteristic is adjustable;
- a temperature sensor that can output temperature information on the memory cell array;
- a register that retains a temperature code corresponding to the temperature information output from the temperature sensor;
- and
- a temperature information updating circuit that updates the temperature code stored in the register, wherein
- when the temperature code stored in the register is updated, the circuit characteristic of the termination circuit is adjusted.
6 more elements
A semiconductor memory device, comprising:
- a terminal for input/output;
- a terminal for first power input to which a first voltage is supplied;
- a terminal for second voltage supply to which a second voltage lower than the first voltage is supplied;
- a terminal for third voltage supply to which a third voltage lower than the second voltage is supplied;
- a memory cell array;
- an input/output circuit that inputs/outputs a signal between the terminal for input/output and the memory cell array and that includes an input circuit in which a circuit characteristic is adjustable;
- a reference voltage generation circuit that generates a power supply reference voltage;
- and
- a voltage acquiring circuit that acquires voltage information based on a comparison between the second power supply voltage input to the terminal for second power input and the power supply reference voltage generated by the reference voltage circuit, wherein
- when a change in the voltage information is detected by the voltage acquiring circuit, the circuit characteristic of the input circuit of the input/output circuit is adjusted.
7 more elements
Dependencies are inferred from the claim text.