MEMORY DEVICE

Abstract

A memory device includes a first memory cell and a second memory cell each corresponding to a first column address, a first sense amplifier unit, a first bit line connected between the first memory cell and the first sense amplifier unit, and a second bit line connected between the second memory cell and the first sense amplifier unit.

Description

Claims

1. A memory device comprising: a first memory cell and a second memory cell, each of the first memory cell and the second memory corresponding to a first column address;a first sense amplifier unit;a first bit line connected between the first memory cell and the first sense amplifier unit; anda second bit line connected between the second memory cell and the first sense amplifier unit.

2. The memory device according to claim 1, further comprising: a first word line connected to the first memory cell; anda second word line connected to the second memory cell,wherein a first end of the first bit line and a second end of the second bit line are located between the first word line and the second word line when viewed in a first direction, the first direction intersecting with the first word line and the second word line.

3. The memory device according to claim 2, wherein the first end and the second end are provided at positions overlapping with the first sense amplifier unit when viewed in the first direction.

4. The memory device according to claim 1, wherein the first and second bit lines are located between the first and second memory cells and the first sense amplifier unit.

5. The memory device according to claim 2, further comprising: a third memory cell and a fourth memory cell, each of the third memory cell and the fourth memory cell corresponding to a second column address;a third word line connected to the third memory cell;a fourth word line connected to the fourth memory cell;a second sense amplifier unit parallel to the first sense amplifier unit in a second direction, the second direction intersecting with the first direction;a third bit line connected between the third memory cell and the second sense amplifier unit; anda fourth bit line connected between the fourth memory cell and the second sense amplifier unit,wherein a third end of the third bit line and a fourth end of the fourth bit line are located between the third word line and the fourth word line when viewed in the first direction.

6. The memory device according to claim 5, wherein the third end and the fourth end are provided at positions overlapping with the second sense amplifier unit when viewed in the first direction.

7. The memory device according to claim 5, further comprising: a fifth memory cell corresponding to the second column address and connected to the first word line; anda sixth memory cell corresponding to the second column address and connected to the second word line,wherein the third bit line is further connected between each of the fifth memory cell and the sixth memory cell and the second sense amplifier unit.

8. The memory device according to claim 5, further comprising: a seventh memory cell corresponding to a third column address and connected to the first word line;an eighth memory cell corresponding to the third column address and connected to the second word line;a third sense amplifier unit parallel to the first sense amplifier unit in a third direction, the third direction intersecting with the first direction and the second direction;a fifth bit line connected between the seventh memory cell and the third sense amplifier unit; anda sixth bit line connected between the eighth memory cell and the third sense amplifier unit,wherein a fifth end of the fifth bit line and a sixth end of the sixth bit line are located between the first word line and the second word line when viewed in the first direction.

9. The memory device according to claim 8, wherein the fifth end and the sixth end are provided at positions overlapping with the third sense amplifier unit when viewed in the first direction.

10. The memory device according to claim 2, further comprising: a ninth memory cell corresponding to a fourth column address and connected to the first word line;a tenth memory cell corresponding to the fourth column address and connected to the second word line;a fourth sense amplifier unit adjacent to the first sense amplifier unit in a second direction, the second direction intersecting with the first direction;a seventh bit line connected between the ninth memory cell and the fourth sense amplifier unit, the seventh bit line adjacent to the first bit line in a third direction, the third direction intersecting with the first direction and the second direction; andan eighth bit line connected between the tenth memory cell and the fourth sense amplifier unit, the eighth bit line adjacent to the second bit line in the third direction,wherein a seventh end of the seventh bit line and an eighth end of the eighth bit line are located between the first word line and the second word line when viewed in the first direction.

11. The memory device according to claim 10, wherein the first end, the second end, the seventh end, and the eighth end are provided at positions overlapping with at least one of the first sense amplifier unit or the fourth sense amplifier unit when viewed in the first direction.

12. The memory device according to claim 10, further comprising: an eleventh memory cell corresponding to a fifth column address and connected to the first word line;a twelfth memory cell corresponding to the fifth column address and connected to the second word line;a thirteenth memory cell corresponding to a sixth column address and connected to the first word line;a fourteenth memory cell corresponding to the sixth column address and connected to the second word line;a fifth sense amplifier unit arranged on a side opposite to the fourth sense amplifier unit with respect to the first sense amplifier unit;a sixth sense amplifier unit arranged on a side opposite to the first sense amplifier unit with respect to the fourth sense amplifier unit;a ninth bit line connected between the eleventh memory cell and the fifth sense amplifier unit, the ninth bit line adjacent to the seventh bit line in the third direction;a tenth bit line connected between the twelfth memory cell and the fifth sense amplifier unit, the tenth bit line adjacent to the eighth bit line in the third direction;an eleventh bit line connected between the thirteenth memory cell and the sixth sense amplifier unit, the eleventh bit line adjacent to the ninth bit line in the third direction; anda twelfth bit line connected between the fourteenth memory cell and the sixth sense amplifier unit, the twelfth bit line adjacent to the tenth bit line in the third direction,wherein a ninth end of the ninth bit line, a tenth end of the tenth bit line, an eleventh end of the eleventh bit line, and a twelfth end of the twelfth bit line are located between the first word line and the second word line when viewed in the first direction.

13. The memory device according to claim 12, wherein the first end, the second end, the seventh end, the eighth end, the ninth end, the tenth end, the eleventh end, and the twelfth end are provided at positions overlapping with at least one of the first sense amplifier unit or the fourth sense amplifier unit when viewed in the first direction.

14. The memory device according to claim 5, further comprising: a fifteenth memory cell corresponding to the second column address and connected to the first word line;a sixteenth memory cell corresponding to the second column address and connected to the second word line;a thirteenth bit line connected between the fifteenth memory cell and the second sense amplifier unit; anda first wiring connected between the third bit line and the thirteenth bit line,wherein a thirteenth end of the thirteenth bit line and a fourteenth end of the first wiring are located between the first word line and the second word line when viewed in the first direction.

15. The memory device according to claim 14, wherein the first end, the second end, the thirteenth end, and the fourteenth end are provided at positions overlapping with the first sense amplifier unit when viewed in the first direction.

16. The memory device according to claim 2, further comprising: a seventeenth memory cell and an eighteenth memory cell each corresponding to a seventh column address;a seventh sense amplifier unit parallel to the first sense amplifier unit in a second direction, the second direction intersecting with the first direction;a fifteenth bit line connected between the seventeenth memory cell and the seventh sense amplifier unit; anda sixteenth bit line connected between the eighteenth memory cell and the seventh sense amplifier unit,wherein the first bit line and the second bit line are arranged in the second direction,the fifteenth bit line and the sixteenth bit line are arranged in the second direction, andthe fifteenth bit line is adjacent to each of the first bit line and the second bit line in a third direction, the third direction intersecting with the first direction and the second direction.

17. The memory device according to claim 16, further comprising: a nineteenth memory cell and a twentieth memory cell each of the nineteenth memory cell and the twentieth memory cell corresponding to an eighth column address;an eighth sense amplifier unit parallel to the first sense amplifier unit and the seventh sense amplifier unit in the second direction;a seventeenth bit line connected between the nineteenth memory cell and the eighth sense amplifier unit; andan eighteenth bit line connected between the twentieth memory cell and the eighth sense amplifier unit,wherein the seventeenth bit line and the eighteenth bit line are arranged in the second direction, andthe fifteenth bit line is further adjacent to each of the seventeenth bit line and the eighteenth bit line in the third direction.

18. The memory device according to claim 1, wherein the first end of the first bit line and the second end of the second bit line are provided outside the first sense amplifier unit when viewed in a first direction.

19. The memory device according to claim 18, further comprising: a second wiring connected between the first bit line and the first sense amplifier unit; anda third wiring connected between the second bit line and the first sense amplifier unit,wherein the first bit line and the second bit line are arranged in a second direction, the second direction intersecting with the first direction, andeach of the second wiring and the third wiring has a portion extending in a third direction, the third direction intersecting with the first direction and the second direction.