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
Methods and systems for improved engine speed control during engine starting
Compositions and methods using microspheres and non-ionic contrast agents
Processing abstract derived entities defined in a data abstraction model
Message processing method and apparatus based on the SIP protocol and an IP communication system
Format for providing traffic information and a method and apparatus for using the format
Eyeglasses
Buried object detection in GPR images
  Randomly Featured Patents
Camera with a shift optical system responsive to an external device
Portable computer
Fence clip wire twister tool
System and method for designing semiconductor photomasks
Large diameter delivery catheter/sheath
Tube couplings
Trash can assembly
Image forming apparatus executing stabilization process at proper frequency
Reader/writer having coil arrangements to restrain electromagnetic field intensity at a distance
Method for extracting bilirubin-specific enzyme preparation