Patent ID: 6088274
Filing Date: 2000-07-11
Classification: G11C

Abstract:
A method for testing a serial access memory through a main memory, said method comprising:providing a semiconductor memory, said semiconductor memory comprising said main memory and said serial access memory;generating a test data, wherein an expected test data is equivalent to said test data;storing said test data in said serial access memory;sending said test data from said serial access memory to said main memory;storing said test data in said main memory;reading said test data from said main memory;comparing said test data read from said main memory with said expected test data using at least two common lines, wherein said at least two common lines indicate if said serial access memory has at least one defect; andproducing an output having a first state if said test data read from said main memory is similar to said expected test data or a second state if said test data read from said main memory is different than said expected test data.