Semiconductor device

• US 20050135181A1
• Filed: 12/17/2004
• Published: 06/23/2005
• Est. Priority Date: 12/19/2003
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Atsumi, Tomoaki, Shionoiri, Yutaka
• Granted Patent: US 7,319,633 B2
• Time in Patent Office: Days
• US Class Current: 365/230.60
• CPC Class Codes: G11C 16/08 Address circuits; Decoders; Word-line control circuits

Abstract

A semiconductor device in which a current consumption when a word line being selected is suppressed and accurate data reading is carried out. The semiconductor device of a semiconductor device of the invention comprises a data storage means and a power source control means. The data storage means has a plurality of memory cells. The power source control means has at least one power source line and a plurality of switches. In addition, the invention further comprises an address selection means having a selector circuit including a plurality of switches and an output bus, a first decoder circuit for selecting the switch in the selector circuit, and a second decoder circuit.

Claims

1. A semiconductor device comprising:

data storage means having a plurality of memory cells; and

power source control means having a switch for controlling power supply to the data storage means and a voltage power source line.

2. The semiconductor device according to claim 1,

wherein each of the plurality of memory cells has a memory element in a region where a bit line and a word line cross each other through an insulator.

3. The semiconductor device according to claim 2,

wherein the memory element has a transistor.

4. The semiconductor device according to claim 2,

wherein the memory element has a capacitor or a resistor.

5. The semiconductor device according to claim 2,

wherein the memory element has a capacitor and a resistor.

6. The semiconductor device according to claim 1,

wherein the semiconductor device is a masked ROM or a PROM.

7. The semiconductor device according to claim 1,

wherein the semiconductor device is an EPROM, an EEPROM, or a flash memory.

8. The semiconductor device according to claim 1,

wherein the semiconductor device is one selected from the group consisting of a TV equipment, a digital camera, a digital video camera, mobile phone set, a portable information terminal, a portable game machine, a monitor, a notebook personal computer, an audio reproducing device, and an image reproducing device provided with a recording medium.

9. The semiconductor device according to claim 1,

wherein the semiconductor device is an IC card.

10. A semiconductor device comprising:

data storage means having a plurality of memory cells;

power source control means having a switch for controlling power supply to the data storage means and a voltage power source line; and

address selection means having a selector circuit, a first decoder circuit, and a second decoder circuit.

11. The semiconductor device according to claim 10,

wherein each of the plurality of memory cells has a memory element in a region where a bit line and a word line cross each other through an insulator.

12. The semiconductor device according to claim 11,

wherein the memory element has a transistor.

13. The semiconductor device according to claim 11,

wherein the memory element has a capacitor or a resistor.

14. The semiconductor device according to claim 11,

wherein the memory element has a capacitor and a resistor.

15. The semiconductor device according to claim 10,

wherein the semiconductor device is a masked ROM or a PROM.

16. The semiconductor device according to claim 10,

wherein the semiconductor device is an EPROM, an EEPROM, or a flash memory.

17. The semiconductor device according to claim 10,

wherein the semiconductor device is one selected from the group consisting of a TV equipment, a digital camera, a digital video camera, mobile phone set, a portable information terminal, a portable game machine, a monitor, a notebook personal computer, an audio reproducing device, and an image reproducing device provided with a recording medium.

18. The semiconductor device according to claim 10,

wherein the semiconductor device is an IC card.

19. A semiconductor device comprising:

data storage means having a plurality of memory cells;

power source control means having a switch for controlling power supply to the data storage means and a voltage power source line;

address selection means having a selector circuit, a first decoder circuit, and a second decoder circuit; and

precharge means having a precharge potential line and a precharge signal line.

20. The semiconductor device according to claim 19,

wherein each of the plurality of memory cells has a memory element in a region where a bit line and a word line cross each other through an insulator.

21. The semiconductor device according to claim 20,

wherein the memory element has a transistor.

22. The semiconductor device according to claim 20,

wherein the memory element has a capacitor or a resistor.

23. The semiconductor device according to claim 20,

wherein the memory element has a capacitor and a resistor.

24. The semiconductor device according to claim 19,

wherein the semiconductor device is a masked ROM or a PROM.

25. The semiconductor device according to claim 19,

wherein the semiconductor device is an EPROM, an EEPROM, or a flash memory.

26. The semiconductor device according to claim 19,

wherein the semiconductor device is one selected from the group consisting of a TV equipment, a digital camera, a digital video camera, mobile phone set, a portable information terminal, a portable game machine, a monitor, a notebook personal computer, an audio reproducing device, and an image reproducing device provided with a recording medium.

27. The semiconductor device according to claim 19,

wherein the semiconductor device is an IC card.

28. A semiconductor device comprising:

data storage means having a plurality of memory cells;

power source control means having. a switch for controlling power supply to the data storage means and a voltage power source line; and

display means having a pixel.

29. The semiconductor device according to claim 28,

wherein each of the plurality of memory cells has a memory element in a region where a bit line and a word line cross each other through an insulator.

30. The semiconductor device according to claim 29,

wherein the memory element has a transistor.

31. The semiconductor device according to claim 29,

wherein the memory element has a capacitor or a resistor.

32. The semiconductor device according to claim 29,

wherein the memory element has a capacitor and a resistor.

33. The semiconductor device according to claim 28,

wherein the semiconductor device is a masked ROM or a PROM.

34. The semiconductor device according to claim 28,

wherein the semiconductor device is an EPROM, an EEPROM, or a flash memory.

35. The semiconductor device according to claim 28,

wherein the semiconductor device is one selected from the group consisting of a TV equipment, a digital camera, a digital video camera, mobile phone set, a portable information terminal, a portable game machine, a monitor, a notebook personal computer, an audio reproducing device, and an image reproducing device provided with a recording medium.

36. The semiconductor device according to claim 28,

wherein the semiconductor device is an IC card.

37. A semiconductor device comprising:

data storage means having a plurality of memory cells;

power source control means having a switch for controlling power supply to the data storage means and a voltage power source line;

address selection means having a selector circuit, a first decoder circuit, and a second decoder circuit; and

display means having a pixel.

38. The semiconductor device according to claim 37,

wherein each of the plurality of memory cells has a memory element in a region where a bit line and a word line cross each other through an insulator.

39. The semiconductor device according to claim 38,

wherein the memory element has a transistor.

40. The semiconductor device according to claim 38,

wherein the memory element has a capacitor or a resistor.

41. The semiconductor device according to claim 38,

wherein the memory element has a capacitor and a resistor.

42. The semiconductor device according to claim 37,

wherein the semiconductor device is a masked ROM or a PROM.

43. The semiconductor device according to claim 37,

wherein the semiconductor device is an EPROM, an EEPROM, or a flash memory.

44. The semiconductor device according to claim 37,

wherein the semiconductor device is one selected from the group consisting of a TV equipment, a digital camera, a digital video camera, mobile phone set, a portable information terminal, a portable game machine, a monitor, a notebook personal computer, an audio reproducing device, and an image reproducing device provided with a recording medium.

45. The semiconductor device according to claim 37,

wherein the semiconductor device is an IC card.

46. An ID tag comprising:

data storage means having a plurality of memory cells;

power source control means having a switch for controlling power supply to the data storage means and a voltage power source line;

address selection means having a selector circuit, a first decoder circuit, and a second decoder circuit;

control means;

power source generation means; and

transmission and reception means.

47. The ID tag according to claim 46,

wherein each of the plurality of memory cells has a memory element in a region where a bit line and a word line cross each other through an insulator.

48. The ID tag according to claim 47,

wherein the memory element has a transistor.

49. The ID tag according to claim 47,

wherein the memory element has a capacitor or a resistor.

50. The ID tag according to claim 47,

wherein the memory element has a capacitor and a resistor.