Clock signal generator generating four-phase clock signals
AssigneeMicron Technology, Inc.
InventorToshiaki Tsukihashi
Life of this patent
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Abstract
Disclosed herein is an apparatus that includes a clock generator configured to generate first, second, third, and fourth clock signals different in phase from one another, and first, second, third, and fourth clock drivers each configured to drive the first, second, third, and fourth clock signals, respectively. The first and second clock drivers are arranged symmetrically with respect to a first line extending in a first direction. The first and third clock drivers a arranged symmetrically with respect to a second line extending in a second direction. The first and fourth clock drivers are arranged symmetrically with respect to a point crossing the first and second lines.
Claims20
An apparatus comprising:
- a clock generator configured to generate first, second, third, and fourth clock signals different in phase from one another;
- and
- first, second, third, and fourth clock drivers each configured to drive the first, second, third, and fourth clock signals, respectively,
- wherein the first and second clock drivers are arranged symmetrically with respect to a first line extending in a first direction,
- wherein the first and third clock drivers are arranged symmetrically with respect to a second line extending in a second direction, and
- wherein the first and fourth clock drivers are arranged symmetrically with respect to a point crossing the first and second lines.
An apparatus comprising:
- a first external terminal electrode supplied with a first external clock signal;
- a second external terminal electrode supplied with a second external clock signal;
- a clock generator configured to generate first, second, third, and fourth internal clock signals different in phase from one another by dividing the first and second external clock signals;
- and
- first, second, third, and fourth clock drivers each configured to drive the first, second, third, and fourth clock signals, respectively,
- wherein the clock generator is surrounded by the first, second, third, and fourth clock drivers.
Dependencies are inferred from the claim text.