Programmable speed/power arrangement for integrated devices having logic matrices

• US 4,968,900 A
• Filed: 07/31/1989
• Issued: 11/06/1990
• Est. Priority Date: 07/31/1989
• Status: Expired due to Term

• Current Assignee: Intersil Corporation (Renesas Electronics Corporation)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Harvey, Ian E., Malinowski, Christopher W.
• Primary Examiner(s): Hudspeth, David
• Application Number:
  US07/387,534
• Time in Patent Office: 463 Days
• Field of Search: 307/443, 307/202.1, 307/465, 307/468, 307/469, 307/296.3, 340/825.83, 340/825.85, 364/707, 364/716, 364/273.1, 364/273.2, 365/227
• US Class Current: 327/544
• CPC Class Codes: H03K 19/0016 by using a control or a clock signal, e.g. in order to apply power supply

Abstract

A programmable speed/logic arrangement for integrated devices having logic matrices which permits a user to determine the method by which the a logic matrix of an integrated circuit is switched between a low power standby and a high power operation mode. The arrangement includes a switching circuit for switching the logic matrix between modes, switch operating circuit responsive to at least one of internal and external wake-up pulses for operating the switching circuit, and an internal pulse generator for selectively generating a wake-up pulse internally of the matrix. The logic matrix is provided with a specific addressable location which is responsive to an appropriate address to generate the internal wake-up pulse as well as a dedicated input responsive to an externally generated wake-up pulse. Further, high/low power fuses or E/EE CMOS devices can be employed to programmably connect the logic matrix to different levels of high power sources. The plural power sources may be a plurality of parallel switches for each column.

Claims

1. A programmable speed/power arrangement for an integrated device having a logic matrix comprising:

(a) switching means for switching the logic matrix between a low power, stand-by mode and a high power, high speed operation mode;

(b) switch operating means responsive to at least one of a wake-up pulse generated externally of the logic of the matrix and a wake-up pulse generated internally of the logic matrix for operating the switching means; and

(c) internal wake-up pulse generator means, connected to the switch operating means, for selectively generating an internal wake-up pulse in dependence upon processing requirements.

2. An arrangement according to claim 1, wherein the switch operating means and the switching means are part of the logic matrix.

3. An arrangement according to claim 1, wherein the switch operating means comprises a NAND gate having a first and second input and an output connected to the switching means, said first input being connected to the internal wake-up Pulse generator means for receiving a high signal at the one input of the NAND gate when the internally generated wake-up pulse is absent and a low signal at the first input of the NAND gate upon internal generation of the wake-up pulse, and said second input of the NAND gate being coupled to receive the externally generated wake-up pulse.

4. An arrangement according to claim 3, wherein the switching means is operated in dependence upon the output state of the output of the NAND gate, the switching means being connected between the logic matrix and a power source.

5. An arrangement according to claim 4, wherein the switching means comprises a plurality of parallel switches operated in unison.

6. An arrangement according to claim 5, wherein the plurality of switches prevent current flow from the power source through the matrix to ground when the plurality of switches are open and further permit flow from the power source through the matrix to ground when the switches are closed.

7. An arrangement according to claim 1, wherein the internal wake-up pulse generator means comprises:

a plurality of specific addressable locations in the logic matrix, one of the specific addressable locations being responsive to an appropriate address to generate the wake-up pulse to operate the switching means.

8. An arrangement according to claim 7, wherein the pulse generator means comprises a NAND gate having first and second input and an output connected to the switching means, said first input being connected to one of the specific addressable locations which generates a low signal when the one specific addressable location is addressed and a high signal when the one specific addressable location is not addressed and said second input of the NAND gate being coupled to receive the externally generated wake-up signal.

9. An arrangement according to claim 8, wherein the switching means is operated in dependence upon the output state of the output of the NAND gate, the switching means being connected between the logic matrix and a power source.

10. An arrangement according to claim 9, wherein the switching means comprises a plurality of parallel switches operated in unison.

11. An arrangement according to claim 10, wherein the plurality of switches prevent current flow from the power source through the matrix to ground when the plurality of switches are open and further permit flow from the Power source through the matrix to ground when the switches are closed.

12. An arrangement according to claim 1, wherein said switch operating means include programmable power means for programmably determining the magnitude of said high power of said operation mode.

13. An arrangement according to claim 12, wherein the programmable power means includes a high-low fuse for selectively connecting the logic matrix to a first or second magnitude power sources.

14. An arrangement according to claim 12, wherein the programmable power means includes E/EE CMOS devices connecting the logic matrix to a first and second magnitude power sources.

15. An arrangement according to claim 12, wherein said switching means includes a plurality of parallel switching means for each column of said logic matrix, and said programmable power means determines which parallel switching means per column are closed in said operation mode to determine the magnitude of high power by said switch operating means.

16. An arrangement according to claim 15, wherein said switch operating means closes a different combination of switching means for internally and externally generated wake-up pulse to determine different magnitude of high power by said switch operating means.