Semiconductor device including fuse circuit
View Patent ↗Disclosed here is a semiconductor device that comprises plurality of input nodes configured to be supplied with input signals, a decoder coupled to the input nodes, the decoder configured to decode the input signals and output decoded sepals, and a plurality of fuse circuits provided correspondingly with the decoded signals and configured to be programmed responsive to the decoded signals, respectively
1. A method comprising:
decoding a plurality of address bits to produce a plurality of decoded address bits; and
programming the plurality of decoded address bits into a plurality of fuse circuits.
2. The method of claim 1 , wherein a number of the plurality of address bits is equal to M and a number of the plurality of decoded address bits is equal to N; and
wherein each of M and N is an integer of two or more and N is greater than M.
3. The method of claim 1 , further comprising:
generating a first voltage before programming the plurality of decoded address bits, and programming the plurality of decoded address bits is executed by using the first voltage.
4. The method of claim 3 , further comprising:
generating a second voltage different from the first voltage before programming the plurality of decoded address bits, and programming the plurality of decoded address bits is executed by using the second voltage.
5. The method of claim 4 , wherein generating the first, voltage and generating the second voltage is executed substantially at the same time.
6. The method of claim 1 , further comprising:
encoding the plurality of decoded address bits programmed into the plurality of fuse circuits to reproduce the plurality of address bits; and
latching the plurality of address bits that have been reproduced by encoding.
7. The method of claim 6 , further comprising:
setting a first command to enter a PPR mode before decoding the plurality of address bits; and
setting a second command to exit the PPR mode after latching the plurality of address bits that have been reproduced by encoding.
8. A method comprising:
receiving a plurality of first address bits;
receiving, in parallel to receiving the plurality of first address bits, a plurality of second address bits;
decoding the plurality of first address bits to produce a plurality of first decoded address bits;
decoding, in parallel to decoding the plurality of first address bits, the plurality of second address bits to produce a plurality of second decoded address bits;
programming the plurality of first decoded address bits into a plurality of first fuse circuits; and
programming, when programming the plurality of first decoded address has been finished, the plurality of second decoded address bits into a plurality of second fuse circuits.
9. The method of claim 8 , wherein a number of the plurality of first address bits is equal to M, a number of the plurality of first decoded address bits being equal to N, a number of the plurality of second address bits being equal to K and a number of the plurality of second decoded address bits being equal to L;
wherein each of M and N is an integer of two or more and N is greater than M; and
wherein each of K and L is an integer of two or more and L is greater than K.
10. The method of claim 9 , wherein M is equal to K and N is equal to L.
11. The method of claim 8 , further comprising:
generating a first voltage before programming the plurality of first decoded address bits, and programming each of the plurality of first decoded address bits and each of the plurality of second address bits is executed by using the first voltage.
12. The method of claim 11 , further comprising:
generating a second voltage different from the first voltage before programming the plurality of first decoded address bits, and programming each of the plurality of first decoded address bits and each of the plurality of second decoded address bits is executed by using the second voltage.
13. The method of claim 12 , wherein generating the first voltage and generating the second voltage is executed substantially at the same time.
14. The method of claim 8 , further comprising:
encoding the plurality of first decoded address bits programmed into the plurality of first fuse circuits to reproduce the plurality of first address bits;
encoding in parallel to encoding the plurality of first decoded address bits, the plurality of second decoded address bits programmed into the plurality of second fuse circuits to reproduce the plurality of second address bits;
latching the plurality of first address bits that have been reproduced by encoding; and
latching, in parallel to latching the plurality of first address bits, the plurality of second address bits that have been reproduced by encoding.
15. The method of claim 14 , further comprising:
setting a first command to enter a PPR mode before decoding the plurality of first address bits and decoding the plurality of second address bits; and
setting a second command to exit the PPR mode after latching the plurality of first address bits that have been reproduced by encoding and latching the plurality of second address bits that have been reproduced by encoding.
16. The method of claim 8 , wherein the plurality of first address bits are received as a portion of row address information and the plurality of second address bits are received as another portion of the row address information.
17. A method comprising:
receiving address information to access at least one word line, the address information is segmented into a plurality of address bit portions;
decoding the plurality of address bit portions to produce a plurality of decoded address bit portions, respectively; and
programming each of the plurality of decoded address bit portions into a corresponding one of a plurality of fuse circuits.
18. The method of claim 17 , wherein one of the plurality of address bit portions includes M number of address bits and one of the plurality of decoded address bit portions corresponding to the one of the plurality of address bit portions includes N number of decoded address bits; and
wherein each of M and N is an integer of two or more and N is greater than M.
19. The method of claim 17 , wherein decoding the plurality of address bit portions is executed in parallel.
20. The method of claim 19 , wherein programming each of the plurality of decoded address bit portions is executed such that programming any one of the plurality of decoded address bit portions does not overlap programming another of the plurality of decoded address bit portions.