PROM for integrated circuit identification and testing
AssigneeAnalog Devices, Inc.
InventorsRichard A. Meaney, Raymond J. Speer
Life of this patent
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Abstract
In an integrated circuit package, a ROM is provided for identifying the device for testing purposes. The ROM is programmed, for example, by cutting resistor links. The resistor links set the output of the PROM. This output is a binary word which is read by the tester at the same time that the tester performs measurements on the reference device. With this information the tester can then perform various calculations.
Claims16
In the testing of a plurality of electronic devices to determine at least one parameter or performance characteristic of each device, wherein the data resulting from the testing is to be correlated to the electronic device producing said data, the method which comprises:
- co-packaging with each said electronic device a read-only memory (ROM) thereby forming a co-packaged electronic device;
- programming the ROM with an identification code of a predetermined number of bits which identifies the co-packaged electronic device uniquely from all other possible such electronic devices;
- said code being used to identify unambiguously said co-packaged electronic device;
- reading from said co-packaged ROM the identification code programmed therein when measuring a selected characteristic of any of said electronic devices;
- and
- associating the measurement of the selected characteristic with the read identification code.
In an integrated circuit package containing an electronic device, the improvement comprising, in addition to said device, electrically readable means, said electrically readable means is a ROM, which stores a unique device identification code and which is electrically readable for supplying one or more electrical signals for conveying said code, to identify the electronic device uniquely from all other possible such electronic devices such that said unique device identification code is associated with at least one performance characteristic of said device.
Dependencies are inferred from the claim text.