Semiconductor device and method of operating the same
AssigneeSK hynix Inc.
InventorsChul Moon JUNG, Joo Hyeon LEE, Sung Nyou YU
Life of this patent
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Abstract
A semiconductor device may include a fuse array configured to output fuse data. The semiconductor device may include a latch circuit configured to store the fuse data during an enabled section of a dummy boot-up signal, output the stored fuse data as a fuse data information signal during a disabled section of the dummy boot-up signal, and fix the fuse data information signal to a specific level during the enabled section of the dummy boot-up signal regardless of the stored fuse data.
Claims20
A semiconductor device comprising:
- a boot-up signal generation circuit configured to generate a boot-up signal based on a power-up signal and an end signal;
- an oscillating circuit configured to generate an oscillator signal periodically transited based on a dummy boot-up signal and the boot-up signal and a delay oscillator signal generated by delaying the oscillator signal;
- a counting circuit configured to generate a counting address, the end signal and the dummy boot-up signal based on the oscillator signal and the power-up signal;
- a fuse array configured to output fuse information as fuse data based on the counting address;
- and
- a latch circuit configured to generate a fuse data information signal based on the dummy boot-up signal, the delay oscillator signal and the fuse data.
A method of operating a semiconductor device, the method comprising:
- outputting fuse information stored in a fuse array as fuse data during a boot up operation;
- latching the fuse data during the boot up operation for a first duration less than an entire duration of the boot up operation;
- and
- fixing a fuse data information signal to a specific level instead of outputting the latched fuse data as the fuse data information signal for a second duration less than an entire duration of the boot up operation,
- wherein the first duration is different from the second duration.
A semiconductor device comprising:
- a fuse array configured to output fuse data;
- and
- a latch circuit configured to store the fuse data during an enabled section of a dummy boot-up signal, output the stored fuse data as a fuse data information signal during a disabled section of the dummy boot-up signal, and fix the fuse data information signal to a specific level during the enabled section of the dummy boot-up signal regardless of the stored fuse data.
Dependencies are inferred from the claim text.