Back to results
US 8,027,220 B2Granted
Oscillation device, method of oscillation, and memory device
AssigneeFujitsu Semiconductor Limited
InventorHiroyoshi Tomita
Life of this patent
Estimating the term…
Abstract
An oscillation device includes a first setting unit that outputs an oscillation period designation signal, a calculating unit that performs an arithmetic operation on the oscillation period designation signal, and an oscillating unit that generates an oscillation signal having a period based on the oscillation period designation signal subjected to the arithmetic operation.
Claims17
An oscillation device comprising:
- a first setting unit outputting a first oscillation period designation signal;
- a calculating unit performing an arithmetic operation on the first oscillation period designation signal by using a calculating factor;
- a calculation factor output unit outputting the calculation factor to the calculating unit;
- and
- an oscillating unit generating a first oscillation signal corresponding to a period based on the calculated first oscillation period designation signal subjected to the arithmetic operation.
2 more elements
The oscillation device, comprising:
- a first setting unit outputting a first oscillation period designation signal;
- a calculating unit performing an arithmetic operation on the first oscillation period designation signal;
- and
- an oscillating unit generating a first oscillation signal corresponding to a period based on the calculated first oscillation period designation signal subjected to the arithmetic operation,
- wherein the oscillating unit includes:
- a controller generating a current based on the calculated first oscillation period designation signal;
- an oscillator generating a second oscillation signal corresponding a period based on the generated current;
- and
- a first frequency divider dividing a frequency of the second oscillation signal.
6 more elements
The oscillation device, comprising:
- a first setting unit outputting a first oscillation period designation signal;
- a calculating unit performing an arithmetic operation on the first oscillation period designation signal;
- and
- an oscillating unit generating a first oscillation signal corresponding to a period based on the calculated first oscillation period designation signal subjected to the arithmetic operation,
- wherein the oscillating unit includes:
- a controller generating a voltage based on the calculated first oscillation period designation signal;
- an oscillator generating a second oscillation signal corresponding to a period based on the generated voltage;
- and
- a first frequency divider dividing a frequency of the second oscillation signal.
6 more elements
The oscillation device, comprising:
- a first setting unit outputting a first oscillation period designation signal;
- a calculating unit performing an arithmetic operation on the first oscillation period designation signal;
- and
- an oscillating unit generating a first oscillation signal corresponding to a period based on the calculated first oscillation period designation signal subjected to the arithmetic operation, wherein the calculating unit performs addition or subtraction.
1 more element
A memory system comprising:
- a first setting unit that outputs a first oscillation period designation signal;
- a calculating unit that performs an arithmetic operation on the first oscillation period designation signal by using a calculating factor;
- a calculation factor output unit outputting the calculation factor to the calculating unit;
- an oscillating unit that generates a first oscillation signal corresponding to a period based on the calculated first oscillation period designation signal;
- a memory that stores data;
- and
- a memory controller that performs a refresh operation on the memory in response to the oscillation signal.
4 more elements
A method of oscillation for the oscillation device comprising:
- outputting an oscillation period designation signal from the first setting unit;
- performing an arithmetic operation on the oscillation period designation signal by using a calculation factor that is output from a calculating factor output unit;
- and
- generating an oscillation signal corresponding to a period based on the calculated oscillation period designation signal.
1 more element
Dependencies are inferred from the claim text.