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US 2003/0212933 A1Published application
Systems and methods for testing a memory
AssigneeInfineon Technologies AG
InventorGeorg Antonischki
Life of this patent
Estimating the term…
Abstract
Systems and methods for testing a memory array in an integrated circuit. The method provides a favorable tradeoff between test time and quality of test results, by compressing data in a time direction, but not compressing results from multiple primary data lines corresponding to respective I/O pads.
Claims23
A method of testing a memory in an integrated circuit (IC), the method comprising the steps, performed in the integrated circuit, of:
- sending a first value to a plurality of locations;
- initializing a state;
- subsequently, performing the following steps multiple times:
- changing a column address associated with a data line;
- and
- reading from the data line, comparing the read value to the first value, and setting the state to a value depending on the results of the comparing and the current value of the state.
3 more elements
An integrated circuit (IC) comprising:
- a plurality of addressable locations;
- a data line selectively responsive to one of multiple ones of the addressable locations;
- a first element that stores a state;
- first circuitry, activatable multiple times after initialization of the element, that reads from the data line, compares the read value to a first value, and selectively modifies the state to a value depending on the results of the comparing and the current value of the state.
1 more element
A system of testing a memory, the memory being in an integrated circuit (IC), the system comprising:
- means for sending a first value to a plurality of locations;
- means for initializing a state;
- means for changing a column address associated with a data line;
- and
- means for reading from the data line, comparing the read value to the first value, and setting the state to a value depending on the results of the comparing and the current value of the state.
2 more elements
Dependencies are inferred from the claim text.