Micro electro mechanical switch system and method for testing and configuring semiconductor functional circuits

• US 8,732,644 B1
• Filed: 09/15/2004
• Issued: 05/20/2014
• Est. Priority Date: 09/15/2003
• Status: Active Grant

• Current Assignee: NVIDIA Corporation
• Original Assignee: NVIDIA Corporation
• Inventors: Diamond, Michael B.
• Primary Examiner(s): LIN, SUN J
• Application Number:
  US10/942,169
• Time in Patent Office: 3,534 Days
• Field of Search: 716/17, 716/16, 716/4, 716/1, 716/100, 716/104, 716/106, 716/116, 716/117, 716/128, 716/110, 716/136, 716/121
• US Class Current: 716/117
• CPC Class Codes: G01R 31/31704 Design for test; Design verification concerning scan tests G01R31/318583; computer-aided design G06F30/00
• CPC Class Codes: G01R 31/3185 Reconfiguring for testing, e.g. LSSD, partitioning
• CPC Class Codes: G01R 31/318544 Scanning methods, algorithms and patterns G01R31/3183 takes precedence
• CPC Class Codes: G06F 11/2289 by configuration test
• CPC Class Codes: G06F 11/267 Reconfiguring circuits for testing, e.g. LSSD, partitioning
• CPC Class Codes: H01L 22/22 Connection or disconnection of sub-entities or redundant parts of a device in response to a measurement testing and repair of stores after manufacture including at wafer scale G11C29/00; fuses per se H01L23/525
• CPC Class Codes: H01L 23/525 with adaptable interconnections
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

The present invention systems and methods enable configuration of functional components in integrated circuits. A present invention system and method utilizes micro electro-mechanical switches included in pathways of an integrated circuit to flexibly change the operational characteristics of functional components in an integrated circuit die based upon a variety of factors including power conservation, manufacturing defects, compatibility characteristics, performance requirements, and system health (e.g., the number of components operating properly). The micro electro-mechanical switches are selectively opened and closed to permit and prevent electrical current flow to and from functional components. Opening the micro electro-mechanical switches also enables power conservation by facilitating isolation of a component and minimization of impacts associated with leakage currents.

Claims

1. An integrated circuit comprising:

a plurality of functional components for performing processing operations;

a distribution component for distributing information to said plurality of functional components;

a functional component configuration controller for configuring operational characteristics of one or more of said plurality of functional components; and

a micro electro-mechanical switch for selectively coupling and decoupling one or more of said plurality of functional components to and from a bus.

2. The integrated circuit of claim 1 wherein said micro electro-mechanical switch selectively couples and decouples said one or more of said plurality of functional components to and from said bus in accordance with an indication of said operational characteristics from said functional component configuration controller.

3. The integrated circuit of claim 1 wherein said micro electro-mechanical switch prevents electrical current from flowing to said one or more plurality of functional components when said micro electro-mechanical switch is open and said micro electro-mechanical switch permits electrical current to flow to said one or more plurality of functional components when said micro electro-mechanical switch is closed.

4. The integrated circuit of claim 1 wherein said functional component configuration controller provides information to said distribution component regarding said operational characteristics of said plurality of functional components and said distribution component factors said operational characteristics configuration into distribution of said information to said plurality of functional components.

5. The integrated circuit of claim 1 wherein said micro electro-mechanical switch selectively permits or blocks the flow of said information distributed to said plurality of functional components.

6. The integrated circuit of claim 1 wherein said functional component configuration controller opens and closes said micro electro-mechanical switch in accordance with a variety of objectives.

7. The integrated circuit of claim 1 further comprising a mask array wherein each mask included in said mask array corresponds to an operational objective and provides an indication of operational characteristics of said plurality of functional components.

8. The integrated circuit of claim 7 wherein said mask array further comprises:

a yield mask for providing an indication of disablement of defective functional components;

a compatibility mask for indicating enablement of compatible supported operational characteristics of said plurality of functional components;

a performance mask for indicating performance levels for said plurality of functional components; and

a self healing mask for indicating operational characteristics for said plurality of functional components based upon field testing.

9. The integrated circuit of claim 1 wherein said micro electro-mechanical switch is configured to make and break a plurality of connections simultaneously and interrupts electrical current flow in a plurality of lines in said bus when said micro electro-mechanical switch is open.

10. A functional component configuration process comprising:

receiving a functional component configuration alteration indication;

changing a mirco electro-mechanical switch state utilizing a processor based upon said functional component configuration alteration indication; and

diverting workflow in accordance with said functional component configuration alteration indication.

11. The functional component configuration process of claim 10 wherein said changing a mirco electro-mechanical switch state comprises:

opening said mirco electro-mechanical switch to prevent a flow of electrical current; and

closing said mirco electro-mechanical switch to permit a flow of electrical current.

12. The functional component configuration process of claim 10 further comprising:

conveying current to a functional component if said micro electro-mechanical switch is closed; and

preventing power consumption by said functional component if said micro electro-mechanical switch is opened.

13. The functional component configuration process of claim 10 wherein further comprising:

conveying a signal to a functional component if said micro electro-mechanical switch is closed; and

blocking said functional component from receiving a signal if said micro electro-mechanical switch is opened.

14. The functional component configuration process of claim 10 further comprising checking an indication of operational characteristics of a functional component and performing said changing of said mirco electro-mechanical switch state in accordance with said indication of said operational characteristics.

15. The functional component configuration process of claim 14 further comprising distributing workflow and preventing distribution of workflow to said functional component based upon said operational characteristics, wherein said mirco electro-mechanical switch is closed to distribute said workflow to said functional component and mirco electro-mechanical switch is opened to prevent distribution of said workflow to said functional component.

16. The functional component configuration process of claim 14 further comprising checking said operational characteristics, wherein said checking said operational characteristics includes consideration and coordination of various operational objectives.

17. An integrated circuit comprising:

a plurality of functional components for performing similar parallel operations;

a functional component controller for controlling enablement and disablement of one or more of said plurality of functional components;

a plurality of micro electro-mechanical switches for selectively permitting and preventing flow of electrical current to each one of said plurality of functional components individually; and

an allocation component for allocating information to each one of said plurality of functional components that is enable and preventing allocation of information to each one of said plurality of functional components that is disabled.

18. The integrated circuit of claim 17 wherein said functional component controller provides information to said allocation component regarding which of said plurality of functional components is enabled and which is disabled and said functional component controller also provides an indication to said plurality of micro electron mechanical switches whether one of said plurality of functional components corresponding to one of said plurality of micro electro-mechanical switches is enabled or disabled.

19. The integrated circuit of claim 17 wherein each one of said plurality of micro electro-mechanical switches selectively permits flow of electrical current to a corresponding one of said plurality of functional components if said functional component controller indicates said corresponding one of said plurality of functional components should be enabled and each one of said plurality of micro electro-mechanical switches selectively prevents flow of electrical current to said corresponding one of said plurality of functional components if said functional component controller indicates said corresponding one of said plurality of functional components should be disabled.

20. The integrated circuit of claim 17 wherein said functional component controller comprises a software programmable register that controls operations of said plurality of micro electro-mechanical switches.

21. The integrated circuit of claim 17 wherein said functional component controller comprises a hardcoded mask that controls operations of said plurality of micro electro-mechanical switches.