US Patent No: 5,852,579

Number of patents in Portfolio can not be more than 2000

Method and circuit for preventing and/or inhibiting contention in a system employing a random access memory

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ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

A Static Random Access Memory (SRAM) comprises an input/output pin and driver means connected to the input/output pin. The driver means are configured to drive the input/output pin to a voltage potential using a first current, and are further configured to hold the input/output pin at approximately the voltage potential using a second current. In one embodiment, the driver means may comprise a driver unit for driving the input/output pin to the voltage potential, a bus hold circuit for holding the input/output pin at the voltage potential and a control unit connected to the driver unit and the bus hold circuit. The control unit may activate and deactivate the driver unit and the bus hold circuit.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CYPRESS SEMICONDUCTOR CORPORATIONSAN JOSE, CA1989

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arcoleo, Mathew R San Jose, CA 11 200
Churchill, Jonathan F Berkshire, GB 15 200
Johnson, Derek Smyrna, GA 15 84
Leong, Raymond M Los Altos, CA 9 346

Cited Art

Patent Info (Count) # Cites Year
 
ADVANCED MICRO DEVICES, INC. (1)
4,820,942 High-speed, high-drive output buffer circuits with reduced ground bounce 55 1988
 
FUJITSU LIMITED (1)
5,517,129 High-speed dual-buffered output circuit 16 1992
 
INTEL CORPORATION (1)
5,063,308 Output driver with static and transient parts 34 1990
 
SAMSUNG ELECTRONICS CO., LTD. (1)
5,471,150 Buffer with high and low speed input buffers 16 1993
 
TRANSPACIFIC IP LTD. (1)
5,708,386 CMOS output buffer with reduced L-DI/DT noise 10 1996

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
SUN MICROSYSTEMS, INC. (16)
6,085,033 Method for determining bit element values for driver impedance control 21 1997
6,060,907 Impedance control circuit 78 1997
5,990,701 Method of broadly distributing termination for buses using switched terminators 9 1997
5,982,191 Broadly distributed termination for buses using switched terminator logic 16 1997
5,955,894 Method for controlling the impedance of a driver circuit 44 1997
6,281,714 Differential receiver 6 1999
6,366,139 Method for an output driver with improved impedance control 11 1999
6,339,351 Output driver with improved impedance control 19 1999
6,281,729 Output driver with improved slew rate control 13 1999
6,278,306 Method for an output driver with improved slew rate control 13 1999
6,420,913 Dynamic termination logic driver with improved impedance control 29 1999
6,316,957 Method for a dynamic termination logic driver with improved impedance control 17 1999
6,297,677 Method for a dynamic termination logic driver with improved slew rate control 18 1999
6,294,924 Dynamic termination logic driver with improved slew rate control 26 1999
6,484,293 Method for determining optimal configuration for multinode bus 9 2000
6,608,506 Dynamic termination logic driver with improved impedance control 8 2002
 
INTEL CORPORATION (3)
6,191,606 Method and apparatus for reducing standby leakage current using input vector activation 9 1998
6,169,419 Method and apparatus for reducing standby leakage current using a transistor stack effect 38 1998
6,329,874 Method and apparatus for reducing standby leakage current using a leakage control transistor that receives boosted gate drive during an active mode 48 1998
 
VOLTERRA SEMICONDUCTOR CORPORATION (3)
6,529,056 Circuit with FET transistor pair 4 2002
6,703,888 Method of operating circuit with FET transistor pair 1 2002
7,230,470 Power switch using a field-effect transistor (FET) pair 3 2005
 
LSI LOGIC CORPORATION (2)
6,557,066 Method and apparatus for data dependent, dual level output driver 20 1999
6,801,969 Method and apparatus for data dependent, dual level output driver 6 2002
 
SAMSUNG ELECTRONICS CO., LTD. (2)
6,781,899 Semiconductor memory device and test method therof 2 2002
6,906,963 Semiconductor memory device having output driver for high frequency operation 0 2003
 
ADVANCED MICRO DEVICES, INC. (1)
6,054,881 Input/output (I/O) buffer selectively providing resistive termination for a transmission line coupled thereto 32 1998
 
INFINEON TECHNOLOGIES NORTH AMERICA CORP. (1)
6,448,812 Pull up/pull down logic for holding a defined value during power down mode 21 1998
 
MICRON TECHNOLOGY, INC. (1)
7,635,991 Output buffer strength trimming 3 2006
 
STMICROELECTRONICS S.R.L. (1)
6,489,807 Output buffer and method of driving 18 2001