Repair information storage circuit and semiconductor apparatus including the same
A repair information storage circuit may include a fuse block, a controller, and a fuse latch array. The fuse block provides a boot-up enable signal and repair information. The controller generates a voltage control signal in response to the boot-up enable signal. The fuse latch array stores repair information provided from the fuse block. The voltage control signal, which is used as a bulk bias of a transistor formed in the fuse latch array, is adjustable.
1. A repair information storage circuit comprising:
a controller configured to generate a voltage control signal in response to a boot-up enable signal; and
a fuse latch array configured to store a repair information,
wherein a threshold voltage of a transistor formed in the fuse latch array is adjusted according to the voltage control signal, and
wherein the voltage control signal generated when the boot-up enable signal is not activated is different from the voltage control signal generated when the boot-up enable signal is activated.
2. The repair information storage circuit according to claim 1 , wherein the repair information comprises address information of a defective memory cell among memory cells included in a memory block of a semiconductor apparatus.
3. The repair information storage circuit according to claim 1 , wherein the fuse latch array comprises a plurality of fuse latch units, and each of the fuse latch units comprises the transistor configured to receive the voltage control signal as a bulk bias.
4. The repair information storage circuit according to claim 1 , wherein, when the boot-up enable signal is not activated, the controller generates the voltage control signal having a first pumping voltage, which is higher than a power supply voltage, for PMOS transistors of the fuse latch array, and generates the voltage control signal having a second pumping voltage, which is lower than ground voltage, for NMOS transistors of the fuse latch array.
5. The repair information storage circuit according to claim 1 , wherein the controller is configured to generate a fuse latch select signal, a first fuse signal, and a second fuse signal in response to an address signal and the repair information.
6. The repair information storage circuit according to claim 5 , wherein the fuse latch array comprises a plurality of latch units which are selectively enabled according to the fuse latch select signal and store the first and second fuse signals.
7. The repair information storage circuit according to claim 1 , wherein the voltage control signal comprises first and second voltage control signals, and wherein the controller comprises:
a latch control logic configured to generate a first fuse signal having the same logic level as the repair information and a second fuse signal having the opposite logic level to the first fuse signal, and generate a fuse latch select signal in response to an address signal; and
a voltage control unit configured to generate the first and second voltage control signals in response to the boot-up enable signal.
8. The repair information storage circuit according to claim 7 , wherein the fuse latch array comprises a plurality of fuse latch units, and
each of the fuse latch units comprises:
a first transistor group configured to receive the first voltage control signal through a bulk terminal thereof;
a second transistor group configured to receive the second voltage control signal through a bulk terminal thereof; and
a third transistor group configured to be selectively enabled according to the fuse latch select signal, and provide the first and second fuse signals to nodes where the first transistor group is coupled to the second transistor group.
9. The repair information storage circuit according to claim 8 , wherein, when the boot-up enable signal is not activated, the controller adjusts the voltage level of the first voltage control signal to a higher level than when the boot-up enable signal is activated, and adjusts the voltage level of the second voltage control signal to a lower level than when the boot-up enable signal is activated.
10. A semiconductor apparatus comprising:
a memory block comprising a plurality of unit memory blocks;
a fuse block configured to store address information of a defective memory cell among memory cells of the memory block as repair information, and output the repair information during a boot-up operation period of the semiconductor apparatus; and
a repair information storage circuit configured to store the repair information in one or more fuse latch arrays during the boot-up operation period, and adjust threshold voltage of a transistor formed in the fuse latch array so that the threshold voltage when the boot-up enable signal is activated is different from the threshold voltage when the boot-up enable signal is not activated.
11. The semiconductor apparatus according to claim 10 , wherein the one or more fuse latch arrays are configured in each of the unit memory blocks.
12. The semiconductor apparatus according to claim 10 , wherein the repair information storage circuit comprises:
a controller configured to generate a voltage control signal in response to a boot-up enable signal provided from the fuse block; and
the fuse latch array configured to store the repair information provided from the fuse block.
13. The semiconductor apparatus according to claim 12 , wherein the fuse latch array comprises a plurality of fuse latch units, and each of the fuse latch units comprises a plurality of transistors configured to receive the voltage control signal through bulk terminals thereof.
14. The semiconductor apparatus according to claim 12 , wherein, when the boot-up enable signal is not activated, the controller generates the voltage control signal having a first pumping voltage, which is higher than a power supply voltage, for PMOS transistors of the fuse latch array, and generates the voltage control signal having a second pumping voltage, which is lower than ground voltage, for NMOS transistors of the fuse latch array.
15. The semiconductor apparatus according to claim 12 , wherein the controller is configured to generate a fuse latch select signal, a first fuse signal, and a second fuse signal in response to an address signal and the repair information.
16. The semiconductor apparatus according to claim 15 , wherein the fuse latch array comprises a plurality of fuse latch units which are selectively enabled according to the fuse latch select signal and store the first and second fuse signals.
17. The semiconductor apparatus according to claim 12 , wherein the voltage control signal comprises first and second voltage control signals, and wherein the controller comprises:
a latch control logic configured to generate a first fuse signal having the same logic level as the repair information and a second fuse signal having the opposite logic level to the first fuse signal, and generate a fuse latch select signal in response to an address signal; and
a voltage control unit configured to generate the first and second voltage control signals in response to the boot-up enable signal.
18. The semiconductor apparatus according to claim 17 , wherein the fuse latch array comprises a plurality of fuse latch units, and
each of the fuse latch units comprises:
a first transistor group configured to receive the first voltage control signal through a bulk terminal thereof;
a second transistor group configured to receive the second voltage control signal through a bulk terminal thereof; and
a third transistor group configured to be selectively enabled according to the fuse latch select signal, and provide the first and second fuse signals to nodes where the first transistor group is coupled to the second transistor group.
19. The semiconductor apparatus according to claim 18 , wherein, when the boot-up enable signal is not activated, the controller adjusts the voltage level of the first voltage control signal to a higher level than when the boot-up enable signal is activated, and adjusts the voltage level of the second voltage control signal to a lower level than when the boot-up enable signal is activated.