Back to results
US 8,217,698 B2Granted
Clock integrated circuit
AssigneeMacronix International Co., Ltd.
InventorsChung-Kuang Chen, Chun-Hsiung Hung, Han-Sung Chen
Life of this patent
Estimating the term…
Abstract
The clock circuit of an integrated circuit operates with variations such as temperature, ground noise, and power noise. Various aspects of an improved clock integrated circuit address one or more of the variations in temperature, ground noise, and power noise.
Claims19
An apparatus, comprising:
- a clock integrated circuit, comprising:
- a latch generating a clock signal output of the clock integrated circuit;
- timing circuitry coupled to an output of the latch;
- inverter circuitry comparing an output of the timing circuitry against a temperature compensated trigger point of the inverter circuitry, such that timing of the clock signal output of the clock integrated circuit resists variation with temperature, an output of the inverter circuitry coupled to an input of the latch.
1 more element
An apparatus, comprising:
- a clock integrated circuit, comprising:
- a latch generating a clock signal output of the clock integrated circuit;
- timing circuitry coupled to an output of the latch;
- Schmitt trigger circuitry comparing an output of the timing circuitry against a temperature compensated reference, such that timing of the clock signal output of the clock integrated circuit resists variation with temperature, an output of the inverter circuitry coupled to an input of the latch.
1 more element
An apparatus, comprising:
- a clock integrated circuit, comprising:
- a latch generating a clock signal output of the clock integrated circuit;
- timing circuitry coupled to an output of the latch;
- circuitry comparing an output of the timing circuitry against a temperature compensated reference, such that timing of the clock signal output of the clock integrated circuit resists variation with temperature, an output of the circuitry coupled to an input of the latch;
- and
- a current generator based reference circuit generating the temperature compensated reference.
3 more elements
Dependencies are inferred from the claim text.