| CPC G01R 19/16552 (2013.01) [G01R 19/16571 (2013.01)] | 12 Claims |
|
1. A detection result recording and outputting device of an integrated circuit, the device comprising:
a sensing circuit configured to detect a variation in a characteristic of a target circuit, and generate multiple detection results according to the variation at a first speed;
a decision circuit configured to receive the multiple detection results, and generate a trigger signal or changes a level of the trigger signal when finding that a first detection result of the multiple detection results satisfies a predetermined condition, wherein the first detection result satisfies the predetermined condition firstly among the multiple detection results;
a storage circuit; and
a control circuit configured to start writing the first detection result and subsequent (N−1) detection result(s) of the multiple detection results into the storage circuit at a second speed according to the trigger signal when the first detection result satisfies the predetermined condition; and the control circuit further configured to start reading out N detection results including the first detection and the subsequent (N−1) detection result(s) from the storage circuit at a third speed when M detection result(s) of the N detection results is/are written into the storage circuit, and configured to output the N detection results read from the storage circuit to an output interface of the integrated circuit at a fourth speed,
wherein the second speed is not higher than the first speed but higher than the fourth speed, the N is an integer greater than one, and the M is a positive integer and not greater than the N.
|