Apparatus and system for adjusting internal voltage
AssigneeSK hynix Inc.
InventorsHo Uk Song, A Ram Rim
Life of this patent
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Abstract
An apparatus for adjusting an internal voltage includes a device characteristic detection circuit which detects a device characteristic, compares the device characteristic with an external clock, and generates a comparison signal, and an internal voltage adjustment circuit which receives an adjustment code generated based on the comparison signal, adjusts a level of an internal voltage, and generates a level-adjusted internal voltage.
Claims19
An apparatus for adjusting an internal voltage, the apparatus comprising:
- a device characteristic detection circuit configured to detect a device characteristic in a wafer probing test process, divide, according to a preset ratio, a device characteristic signal generated based on the device characteristic, compare the divided device characteristic signal with an external clock, and generate a comparison signal;
- and
- an internal voltage adjustment circuit configured to receive an adjustment code generated based on the comparison signal, adjust a level of an internal voltage, and generate a level-adjusted internal voltage.
A system for adjusting an internal voltage, the system comprising:
- an internal voltage adjustment apparatus provided in a semiconductor apparatus, and configured to detect a device characteristic in a wafer probing test process, divide, according to a preset ratio, a device characteristic signal generated based on the device characteristic, compare the divided device characteristic signal with an external clock, generate a comparison signal and adjust an internal voltage according to an adjustment code;
- and
- a test apparatus configured to measure a value of the internal voltage in the semiconductor apparatus, and generate the adjustment code based on the the comparison signal and a measured value of the internal voltage.
The system of 10, wherein the test apparatus generates the adjustment code corresponding to a level difference between the measured value of the internal voltage and a level of an appropriate internal voltage based on information for the level of the appropriate internal voltage according to the comparison signal.
An apparatus to adjust an internal voltage, the apparatus comprising:
- a device characteristic detection circuit configured to compare phase differences between a device characteristic signal and an external clock and generate a comparison signal;
- an internal voltage adjustment circuit configured to adjust an internal voltage according to an adjustment code generated in response to the comparison signal;
- a fuse array configured to store voltage adjustment information by cutting a region of a fuse according to the adjustment code;
- and
- a reference voltage generator configured to perform trimming on a reference voltage based on the stored voltage adjustment information.
Dependencies are inferred from the claim text.