Nonvolatile memory cell arrangement
View Patent ↗Memory transistors are arranged in a plurality of rows and columns. A first source/drain terminal of each memory transistor of a first column is connected to an electrically conductive conductor track in a first metallization plane, and a first source/drain terminal of each memory transistor of a second column adjacent to the first column is connected to an electrically conductive conductor track in a second metallization plane.
1. A memory, comprising:
a multiplicity of nonvolatile memory cells, each nonvolatile memory cell being formed by a memory transistor configured so that electrical charge carriers are stored in nonvolatile fashion;
the memory transistors are arranged in a matrix having a plurality of rows and columns;
a first source/drain terminal of each memory transistor of a first column coupled to an electrically conductive conductor track in a first metallization plane;
a first source/drain terminal of each memory transistor of a second column adjacent to the first column coupled to an electrically conductive conductor track in a second metallization plane;
a first source/drain terminal of each memory transistor of a third column adjacent to the second column coupled to an electrically conductive conductor track in the first metallization plane; and
a first source/drain terminal of each memory transistor of a fourth column adjacent to the third column coupled to an electrically conductive conductor track in the second metallization plane,
wherein the second metallization plane is different than the first metallization plane, wherein a second source/drain terminal of each memory transistor is connected to a respective electrically conductive conductor track in a third metallization plane, the third metallization plane being different than the first metallization plane and different than the second metallization plane.
2. The memory of claim 1 , wherein the memory transistors are coupled to one another in a NOR circuit.
3. The memory of claim 1 , wherein the memory transistors each have an ONO charge storage layer in which the electrical charge carriers can be stored in nonvolatile fashion.
4. The memory of claim 1 , wherein the memory transistors each have a floating gate charge storage layer in which the electrical charge carriers can be stored in nonvolatile fashion.
5. The memory of claim 1 , wherein the memory transistors are silicon memory transistors.
6. The memory of claim 1 , wherein at least one portion of the memory transistors is formed in a 6F 2 basic area or in a 4F 2 basic area.
7. The memory of claim 1 , wherein the second metallization plane is arranged above the first metallization plane.
8. The memory of claim 7 , wherein the second metallization plane is the metallization plane arranged directly above the first metallization plane.
9. The memory of claim 1 , wherein the third metallization plane is arranged above the second metallization plane.
10. The memory of claim 9 , wherein the third metallization plane is the metallization plane arranged directly above the second metallization plane.
11. The memory of claim 1 , wherein the fourth metallization plane is arranged above the third metallization plane.
12. The memory of claim 11 , wherein the fourth metallization plane is the metallization plane arranged directly above the third metallization plane.
13. The memory of claim 1 , wherein the first metallization plane is a metallization plane 1 of the nonvolatile memory cell arrangement, and the second metallization plane is a metallization plane 2 of the nonvolatile memory cell arrangement.
14. The memory of claim 1 , wherein the third metallization plane is a metallization plane 3 of the nonvolatile memory cell arrangement.
15. The memory of claim 1 , wherein the fourth metallization plane is a metallization plane 4 of the nonvolatile memory cell arrangement.
16. The memory of claim 1 , wherein the memory transistors are fin field effect transistors.
17. The memory of claim 16 , the memory transistors are bulk fin field effect transistors.
18. A nonvolatile memory cell arrangement, comprising:
a multiplicity of nonvolatile memory cells, each nonvolatile memory cell being formed by a memory transistor configured so that electrical charge carriers are stored in nonvolatile fashion, and wherein the memory transistors are arranged in a matrix having a plurality of rows and columns;
a first source/drain terminal of each memory transistor of a first column coupled to an electrically conductive conductor track in a first metallization plane;
a first source/drain terminal of each memory transistor of a second column adjacent to the first column coupled to an electrically conductive conductor track in a second metallization plane;
a first source/drain terminal of each memory transistor of a third column adjacent to the second column coupled to an electrically conductive conductor track in the first metallization plane; and
a first source/drain terminal of each memory transistor of a fourth column adjacent to the third column coupled to an electrically conductive conductor track in the second metallization plane,
wherein the first and second metallization planes are not the same,
wherein the conductor tracks are arranged in the column direction alongside the source/drain terminals and have, alongside a portion of the source/drain terminals of the memory transistors of a column, a projection extending perpendicularly to the column direction as far as above the respective source/drain terminal, and wherein the conductor tracks are coupled to the respective source/drain terminal by means of a respective projection and by means of a contact hole respectively provided below the latter.
19. A memory comprising:
a plurality of memory cell transistors arranged in a matrix having a plurality of rows and columns;
a first source/drain terminal of each memory transistor of a first column coupled to an electrically conductive conductor track in a first metallization plane;
a first source/drain terminal of each memory transistor of a second column adjacent to the first column coupled to an electrically conductive conductor track in a second metallization plane;
a first source/drain terminal of each memory transistor of a third column adjacent to the second column coupled to an electrically conductive conductor track in the first metallization plane; and
a first source/drain terminal of each memory transistor of a fourth column adjacent to the third column coupled to an electrically conductive conductor track in the second metallization plane,
the second metallization plane being different than the first metallization plane, wherein second source/drain terminal of each memory transistor is connected to a respective electrically conductive conductor track in a third metallization plane, the third metallization plane being different than the first metallization plane and different than the second metallization plane.