Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Self-test circuit for memory integrated circuits










Image Number 6 for United States Patent #5754486.

A sense amplifier senses and stores data from a memory cell in an array of memory cells arranged in rows and columns. The sense amplifier includes a sense circuit having a pair of first and second complementary digit lines which senses a voltage differential between the first and second complementary digit lines and in response to the sensed voltage differential drives the first and second complementary digit lines to voltage levels corresponding to complementary logic states. An isolation circuit is coupled between the pair of first and second complementary digit lines of the sense amplifier and a pair of first and second complementary digit lines associated with a column of memory cells. The isolation circuit is operable to couple the first complementary digit line of the sense amplifier to the first complementary digit line of the column of memory cells and the second complementary digit line of the sense amplifier to the secondary complementary digit line of the column of memory cells. A switch circuit is operable to couple the first complementary digit line of the sense amplifier to the second complementary digit line of the column of memory cells, and the second complementary digit line of the sense amplifier to the first complementary digit line of the column of memory cells. An equilibration circuit is coupled between the pair of complementary digit lines of the column of memory cells and is operable to equalize the voltage level on the digit lines to a predetermined level.








 
 
  Recently Added Patents
Vehicle inertial sensor systems
Personalized location information for mobile devices
Morphinan compounds
Surface modification
Strap-hook ring
Incrementally increasing deployment of gateways
Tool bag with removable tool wall
  Randomly Featured Patents
Automatic chemistry analyzer
Drug composition containing nucleic acid copolymer
Optical disk having groove address pits and land address pits of equal depths
Acquisition of a user expression and a context of the expression
Pump appliance, in particular for a tank system of an internal combustion engine
Covering cap for a gas bag module
Systems for and methods of circuit construction
Portable security buckle for doors
Magnetic deflection apparatus positioned behind target
Synthetic triple helix-forming compound precursors