WO2006022108A1 - 試験装置、及び試験方法 - Google Patents
試験装置、及び試験方法 Download PDFInfo
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- WO2006022108A1 WO2006022108A1 PCT/JP2005/013643 JP2005013643W WO2006022108A1 WO 2006022108 A1 WO2006022108 A1 WO 2006022108A1 JP 2005013643 W JP2005013643 W JP 2005013643W WO 2006022108 A1 WO2006022108 A1 WO 2006022108A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/3181—Functional testing
- G01R31/3183—Generation of test inputs, e.g. test vectors, patterns or sequences
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/3181—Functional testing
- G01R31/319—Tester hardware, i.e. output processing circuits
- G01R31/31917—Stimuli generation or application of test patterns to the device under test [DUT]
- G01R31/31919—Storing and outputting test patterns
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/3181—Functional testing
- G01R31/319—Tester hardware, i.e. output processing circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/3181—Functional testing
- G01R31/319—Tester hardware, i.e. output processing circuits
- G01R31/3193—Tester hardware, i.e. output processing circuits with comparison between actual response and known fault free response
- G01R31/31932—Comparators
Definitions
- the present invention relates to a test apparatus and a test method for testing a semiconductor device.
- the present invention relates to a test apparatus that outputs signals by pipeline processing.
- the present invention also relates to the following Japanese patent application. For designated countries where incorporation by reference of documents is permitted, the contents described in the following application are incorporated into this application by reference and made a part of the description of this application.
- the test apparatus compares the output data of the device with the expected value once in a match detection cycle of a predetermined length. Then, the end of polling is detected by repeating the match detection cycle. Also, after the end of the match detection cycle that detected the end of polling, the next test item is executed.
- next test item to be performed branches depending on the result of the match detection, for example, in a test apparatus that outputs a signal by pipeline processing, a signal power that requires match detection is connected in cascaded flip-flops. It is difficult to improve the efficiency of match detection until the signal transmitted to the match detection circuit via the signal indicating that no match has been detected returns via the cascaded flip-flops.
- an object of the present invention is to provide a test apparatus and a test method that can solve the above-described problems. This object is achieved by a combination of features described in the independent claims.
- the dependent claims define further advantageous specific examples of the present invention.
- test apparatus for testing a semiconductor device, wherein pattern generation for sequentially reading out and outputting waveform information for testing the semiconductor device From the waveform information sequentially output by the pattern generator and the pattern generator Detects whether the output signal output from the semiconductor device matches the expected value pattern output from the pattern generator in accordance with the waveform generator that shapes the waveform and the match detection request cycle output from the pattern generator.
- Test apparatus comprising: a match detection unit configured to perform a match detection request cycle and causing the pattern generation unit to generate the next waveform information when the output signal and the expected value pattern match I will provide a.
- the pattern generation unit sequentially stores a period generation unit that generates a preset period (period) signal and waveform information, and the sequentially stored waveform information is synchronized with the period signal generated by the pattern generation unit. And a plurality of cascaded flip-flops that output to the waveform generator.
- the interrupt unit may cause the period generation unit to generate the next period signal before the match detection request cycle ends when the output signal of the semiconductor device matches the expected value pattern.
- waveform information generated thereafter may be stored in advance according to the number of stages of the flip-flop.
- the interrupt unit If the output signal and the expected value pattern do not match within the match detection request cycle, the interrupt unit outputs a number of period signals corresponding to the number of stages of the plurality of flip-flops before the cycle time elapses.
- the unmatch control unit to be output to the period generation unit and the unmatch control unit force period generation unit while outputting the number of period signals corresponding to the number of stages of the flip-flops to the waveform information to the flip-flop force waveform generation unit. And a period-hold portion for stopping output.
- the interrupt unit further includes a match control unit that outputs a match signal having a pulse width substantially the same as that of the period signal when the output signal matches the expected value pattern.
- a signal obtained by logically adding a match signal to a period signal generated at each predetermined cycle time for each waveform information may be output as a period signal.
- the period generation unit takes in period data indicating the cycle time of each waveform information, counts the given reference clock, and measures the time.
- a period counter that outputs a period signal when it matches the data, and a signal obtained by logically adding the match signal to the period signal output from the period counter is output as a period signal, and the period signal is used as an enable signal.
- an OR circuit for inputting to the period counter.
- the unmatch control unit outputs an unmatch signal to the period hold unit when the output signal does not match the expected value pattern within the match detection request cycle, and the period hold unit receives the unmatch signal.
- the period generator outputs the number of period signals corresponding to the number of stages of the plurality of flip-flops
- the period counter is prohibited from counting, and the period generator generates the number of period signals corresponding to the number of stages of the plurality of flip-flops.
- a period signal may be output to the OR circuit.
- the waveform generator includes a strobe generator that generates a plurality of strobe signals having different phases within a match detection request cycle, and a timing comparator that detects the value of the output signal at the timing of the plurality of strobe signals. Then, the match detector detects whether the output signal value detected by the timing comparator matches the given expected value pattern.
- the strobe generator does not generate a strobe signal after a predetermined end in the match detection request cycle. It is preferable that the strobe generation unit does not generate a strobe signal before a predetermined start in the match detection request cycle.
- a test method for testing a semiconductor device in which a waveform generation stage for sequentially reading out and outputting waveform information for testing a semiconductor device and a pattern generation stage sequentially. From the waveform information to be output, the waveform generation stage for shaping the waveform, the output signal output by the semiconductor device in accordance with the match detection request cycle output at the pattern generation stage, and the expected value pattern output at the pattern generation stage.
- the match detection stage that detects whether or not they match, and the output signal matches the expected value pattern
- the match detection request cycle is terminated, and the pattern generation stage generates the next waveform information.
- a test device comprising a loading stage.
- the efficiency of testing a semiconductor device can be improved.
- FIG. 1 is a diagram showing an example of a configuration of a test apparatus 100 according to an embodiment of the present invention.
- FIG. 2 is a diagram showing an example of the configuration of the pattern generator 10.
- FIG. 3 is a diagram showing an example of the configuration of a test unit 60 and a pin electronics 160.
- FIG. 4 is a timing chart showing an example of signals output from the AND circuit 110 and the unmatch control unit 48 when a match is detected within a match detection request cycle.
- FIG. 5 is a timing chart showing an example of signals output from the AND circuit 110 and the unmatch control unit 48 when no match is detected within the match detection request cycle.
- FIG. 6 is a flowchart showing an example of a test method according to an embodiment of the present invention.
- Test unit 64 ... Pattern control part, 68 ... Strobe control part, 74 ... Strobe generation part , 82 ⁇ 'Selection unit, 94 ⁇ ' Match detection unit, 100 ⁇ 'Test equipment, 160 ⁇ ⁇ Pin electronics, 162 ⁇ ' Dryno, 164, 166 ⁇ ⁇ Separator, 170 ... 'controller, the best mode for carrying out the 300 ⁇ ⁇ ⁇ semiconductor devices invention
- FIG. 1 is a diagram showing an example of the configuration of a test apparatus 100 according to an embodiment of the present invention.
- the test apparatus 100 is a test apparatus for testing a semiconductor device 300 such as a flash memory, and includes a pattern generator 10, a test unit 60, a PLL 150, a pin electronics 160, and a control unit 170.
- the control unit 170 includes a pattern generator 10, a test unit 60, and pin electronics 1 Control 60 to have semiconductor device 300 tested.
- the control unit 170 supplies a test program for testing the semiconductor device 300 to the pattern generator 10 in advance, and causes the pattern generator 10 to generate a test pattern or the like according to the test program.
- the PLL 150 generates a reference clock having a predetermined period and supplies the reference clock to the pattern generator 10 and the test unit 60.
- the non-turn generator 10 operates in accordance with the reference clock, sequentially reads out waveform information such as a pattern for testing the semiconductor device 300, and outputs it to the test unit 60.
- the test unit 60 is an example of a waveform generation unit and a match detection unit according to the present invention.
- the test unit 60 operates according to a reference clock, receives a period signal and waveform information given from the non-turn generation device 10, and receives pin electronics 160.
- An arbitrary waveform is input to the semiconductor device 300 via the.
- the test unit 60 detects whether the output signal output from the semiconductor device 300 matches the expected value pattern provided from the pattern generator 10 according to the match detection request cycle signal provided from the pattern generator 10. To do.
- the pin electronics 160 is a circuit that exchanges signals between the test unit 60 and the semiconductor device 300, and includes a driver and a comparator provided for each pin of the semiconductor device 300, for example.
- the pattern generator 10 ends the match detection request cycle and causes the test unit 60 to generate the next waveform information. .
- time loss due to match detection can be reduced and semiconductor device testing can be performed efficiently.
- FIG. 2 is a diagram showing an example of the configuration of the pattern generator 10.
- the pattern generator 10 has a pattern generator 12 and an interrupt unit 40.
- the pattern generator 12 is a circuit that sequentially reads out and outputs waveform information for testing the semiconductor device 300, and includes a period generator 36, a plurality of flip-flops (14, 22, 24, 30, 32, 34), And a pattern generator 20. 2 and 3, only one stage of each flip-flop is shown, but each flip-flop may be composed of a plurality of cascaded flip-flops.
- flip-flops 22 and 24 are one-stage data by the period signal m. Make up your pipeline, packed with
- the flip-flop 14 is supplied with a start signal for starting an operation from the control unit 170.
- the flip-flop 14 is composed of a plurality of cascaded flip-flops in order to output the start signal in synchronization with the reference clock.
- the start signal is given to the initial period generator 16, the pattern generator 20, and the flip-flop 22 of the period generator 36 to operate the initial period generator 16 and the pattern generator 20.
- the non-turn generator 20 includes a test pattern (PAT) given to the semiconductor device 300 based on a test program given in advance from the control unit 170, a match detection request signal (FLAGCY) requesting the test unit 60 to detect a match, In addition, a timing set signal (TS) that determines the cycle time and timing clock of each waveform information is generated and output sequentially.
- the match detection request signal FLAGCY is a signal indicating a match detection cycle, for example, a signal indicating H logic in the match detection cycle.
- the signals output from the pattern generator 20 are sequentially stored in the flip-flop 24.
- the period generator 36 includes a period data memory 26, a period counter 28, an OR circuit 38, an initial period generator 16, and an OR circuit 18, and is based on the timing set signal generated by the pattern generator 20. Accordingly, a period signal 0 that determines the start of the cycle time of the waveform information corresponding to the timing set signal is generated. That is, the period generator 36 outputs a period signal 0 indicating a test cycle according to a predetermined test cycle setting. Further, the period generator 36 outputs a period signal m for repacking the signal stored in the flip-flop 24 according to the result of the match detection in the test unit 60.
- the period data memory 26 stores the period data (PRD) in association with the timing set signal, and outputs period data corresponding to the timing set signal output from the no-turn generator 20.
- the period counter 28 takes in the period data output from the period data memory 26 and counts the given reference clock (not shown) to measure the time. If the time matches the period data, Outputs 0. FD in the figure indicates the period data below the reference clock resolution.
- the period signal 0 is input as an enable signal for the period counter 28, the flip-flop 30, and the flip-flop 32. Each of the flip-flops 30 and 32 outputs PAT, TS, FLAGCY, and FD to the test unit 60 in synchronization with the period signal 0.
- the pattern generator 12 outputs a test pattern to the test unit 60 at the beginning of the test cycle.
- the period signal 0 is input as an enable signal (PGFTPRD) of the test unit 60 via the flip-flop 34. With this operation, the test unit 60 is operated according to the test cycle.
- the pattern generator 20 uses the waveform information corresponding to the test cycle to be executed sequentially when the match is detected. Are sequentially stored in the flip-flop 24 in advance.
- the initial period generator 16 receives from the interrupt unit 40 an unmatch signal indicating that the match cannot be detected, the initial period generator 16 outputs a period signal of the number corresponding to the number of stages of the flip-flop 24.
- the OR circuit 18 outputs a logical sum of the period signal and the period signal 0 as a period signal m.
- the period signal m is input as an enable signal for the flip-flop 22, the flip-flop 24, the flip-flop 26, and the pattern generator 20.
- the pattern generator 20 sequentially generates patterns to be sequentially executed when a match cannot be detected, and sequentially stores them in the flip-flop 24.
- the pattern force is generated in advance in the flip-flop 24 which is sequentially generated when the force is not detected. Therefore, when a match is detected, it is necessary to repack the flip-flop 24 with a new pattern.
- test apparatus 100 when a match is detected, if a pattern already stored in the flip-flop 24 is executed and no match is detected, Since the semiconductor device 300 is treated as a defective product, the test time can be shortened.
- the flip-flop 22 has the same number of flip-flops as the flip-flops 24, and synchronizes the start signal and the signal output from the flip-flop 24.
- the start signal output from the flip-flop 22 is input to the OR circuit 38 and the test unit 60, and the The riod generator 36 and the test unit 60 are operated.
- the interrupt unit 40 ends the match detection request cycle when the output signal of the semiconductor device 300 matches the expected value pattern in the test unit 60, that is, when a match is detected. causes the following pattern to be executed:
- the interrupt unit 40 includes a match control unit 42, an unmatch control unit 48, a period hold unit 54, and an OR circuit 56.
- the match control unit 42 receives the match signal and outputs the match signal in synchronization with the reference clock.
- the match control unit 42 includes a flip-flop 44 and an AND circuit 46.
- the flip-flop 44 is shown as a two-stage flip-flop.
- the first-stage flip-flop 44 in FIG. 2 has a plurality of cascaded flip-flops for synchronization with the reference clock.
- the AND circuit 46 outputs a logical product of the match signal output from the first-stage flip-flop 44 shown in FIG. 2 and the inverted signal of the match signal output from the next-stage flip-flop 44. With such an operation, the match control unit 42 outputs a match signal having substantially the same pulse width as that of the period signal.
- the match signal output from the match control unit 42 is input to the logical sum circuit 38 via the logical sum circuit 56.
- the OR circuit 38 outputs a logical sum of the period signal 0 output from the period counter 28 and the match signal as a period signal 0. That is, the interrupt unit 40 interrupts the period signal 0 to cause the match signal to be interrupted, so that the period generation unit 36 outputs the period signal 0 in response to the match signal before the end of the match detection request cycle. Start the site.
- the OR circuit 38 inputs the period signal 0 as an enable signal for the flip-flop 30 and the flip-flop 32 and inputs a new pattern or the like to the test unit 60.
- the OR circuit 38 inputs the period signal 0 as an enable signal for the period counter 28.
- the period counter 28 reads period data of a new test cycle according to the period signal 0 and controls the test cycle. With this operation, when a match is detected, a new test cycle can be generated without waiting for the end of the match detection request cycle, so that the efficiency of the test can be improved.
- the unmatch control unit 48 outputs an unmatch signal in synchronization with the reference clock.
- the unmatch control unit 48 further includes a logical product circuit 50 in addition to the configuration of the match control unit 42. The operation of the unmatch control unit 48 will be described later with reference to FIG.
- the unmatch signal output from the unmatch control unit 48 is input to the initial period generator 16 as described above, and generates a period signal m for storing a new pattern in the flip-flop 24. That is, when the test unit 60 cannot detect a match within the match detection request cycle, the unmatch control unit 48 sends the number of period signals corresponding to the number of stages of the plurality of flip-flops 24 before the cycle time elapses. Output to generator 16.
- the period hold unit 54 When the period hold unit 54 receives an unmatch signal, the period counter 28 prohibits the count operation of the period counter 28 while the initial period generator 16 outputs a predetermined number of period signals.
- the initial period generator 16 outputs a match signal to the OR circuit 38 via the OR circuit 56 after outputting a predetermined number of period signals.
- FIG. 3 is a diagram showing an example of the configuration of the test unit 60 and the pin electronics 160.
- the test unit 60 includes a pattern control unit 64, a strobe control unit 68, a strobe generation unit 74, a match detection unit 94, a selection unit (82-1, 82-2, hereinafter referred to as 82), and a flip-flop (62, 70). 72, 84, 88, 90, 116, 118, 124), and an AND circuit (110, 120).
- the pin electronics 160 includes a driver 162 and comparators (164, 166).
- the reset terminal of each flip-flop of the test unit 60 has a pattern generator.
- the start signal (TGSTART) output by 12 is input.
- the period signal 0 output from the pattern generation unit 12 is input to the pattern control unit 64 strobe control unit 68, the flip-flop 62, and the flip-flop 70 as the enable signal (PGFTPRD), and is synchronized with the period signal 0.
- the nonturn controller 64 receives a timing set signal (TS), high-accuracy period data (FD), and a test pattern (PAT) via the flip-flop 62. Based on these signals, a test signal input to the semiconductor device 300 is output.
- the test pattern is a digital pattern having an array power of 1 and 0, and the pattern control unit 64 generates a test signal indicating a voltage value corresponding to the test pattern in a cycle corresponding to the timing set signal, and The signal is input to the driver 162 at a timing according to the timing signal.
- the strobe control unit 68 receives a timing set signal and a timing signal via the flip-flop 62, and receives a logic H signal from the control unit 170, for example. Then, one reference strobe signal (IST) is output at a predetermined timing within the match detection request cycle.
- the flip-flop 70 outputs a test pattern and a match detection request cycle in synchronization with the pattern control unit 64 and the strobe control unit 68.
- the comparator 164 is a level comparator that compares a predetermined high-level voltage value VH with the voltage value of the output signal output from the semiconductor device 300, and a signal corresponding to the comparison result. Is output.
- the comparator 164 outputs an H level comparison signal indicating 1 when the output signal is equal to or higher than the voltage value VH and indicating 0 when the output signal is equal to or lower than the voltage value VH.
- the comparator 166 is a level comparator that compares a predetermined low-level voltage value VL with the voltage value of the output signal output from the semiconductor device 300, and an L-level comparison signal corresponding to the comparison result. Is output.
- the strobe generator 74 generates a plurality of stove signals having different phases within the match detection request cycle. For example, the strobe generation unit 74 outputs the reference clock output from the PLL 150 as a strobe signal during the match detection request cycle.
- the strobe generator 74 includes an OR circuit (76-1, 76-2, hereinafter collectively referred to as 76), a flip-flop (78-1, 78-2, hereinafter referred to as 78), and an AND circuit. (80-1, 80-2, hereinafter collectively referred to as 80). Further, a signal (FLAGCY) indicating a match detection request cycle is input to the strobe generation unit 74 via the flip-flop 72.
- the OR circuit 76 inputs the logical sum of the reference strobe signal output from the strobe control unit 68 and the signal output from the flip-flop 78 to the flip-flop 78.
- the inverted output of the flip-flop 78 is output after the strobe controller 68 outputs the reference strobe signal. Until the lip flop 78 is reset, it is fixed to L logic.
- a signal (FLAGCY) indicating a match detection request cycle is input to the reset terminal of the flip-flop 78, and is reset when the signal (FLAGCY) becomes L logic. With such an operation, the value of the flip-flop 78 can be reset every match detection request cycle.
- the AND circuit 80 outputs a logical product of the reference clock, the inverted output of the flip-flop 78, and a signal (FLAGCY) indicating a match detection request cycle. That is, the reference strobe signal output from the strobe controller 68 defines the end of the period during which the strobe generator 74 outputs a plurality of strobe signals, and the AND circuit 80 is defined by the signal (FLAGCY).
- the reference clock is output as the strobe signal from the start of the match detection request cycle until the strobe controller 68 outputs the reference strobe signal.
- the match detection unit 94 detects whether the level comparison signal output from the comparator 164 and the comparator 166 matches the expected value at a plurality of timings corresponding to the strobe signal.
- the strobe controller 68 defines the end of the period for generating the strobe signal for the H level comparison signal and the end of the period for generating the strobe signal for the L level comparison signal. Yes L level reference strobe signal may be generated.
- the H level reference strobe signal is input to the OR circuit 76-1, and the AND circuit 80-1 outputs a strobe signal for the H level comparison signal.
- the L level reference strobe signal is input to the OR circuit 76-2, and the AND circuit 80-2 outputs a strobe signal for the L level comparison signal.
- the start timing and the end timing of the match detection can be arbitrarily set.
- the start and end can be easily set. For this reason, for example, even when the required spectrum differs depending on the application of the semiconductor device, it is possible to easily set the match detection period according to the specification.
- the strobe control unit 68 has the strobe generation unit 74 within the match detection request cycle.
- a reference strobe signal that defines the start of a period during which a plurality of strobe signals are output may be further output.
- the strobe generator 74 does not generate the strobe signal after the end determined by the reference strobe signal in the match detection request cycle and before the start determined by the reference strobe signal in the match detection request site. .
- Selection unit 82-1 selects the strobe signal output from strobe control unit 68 at the FLAGCY power level, and selects the strobe signal output from AND circuit 80-1 when FLAGCY is at the H level. . Thereby, in the match detection request cycle, a match is detected by the aforementioned plurality of stoves, and in other than the match detection request cycle, the timing comparison is performed by the normal strobe output from the strobe control unit 68.
- the selection unit 82-2 selects the strobe signal output from the strobe control unit 68 when the FLAGCY is at the L level, and the strobe signal output from the AND circuit 80-2 when the FLAGCY is at the H level. Selected.
- the flip-flop 84 is an example of a timing comparator according to the present invention.
- the flip-flop 84-1 detects the value of the H level comparison signal at the timing of the plurality of strobe signals output from the AND circuit 80-1.
- the flip-flop 84-2 detects the value of the L level comparison signal at the timing of the plurality of strobe signals output from the AND circuit 80-2.
- the match detection unit 94 detects whether the value detected by the flip-flop 84 matches the given expected value.
- the match detector 94 is provided with the expected test pattern force value pattern transmitted via the flip-flops (70, 72, 122, 124).
- the flip-flop 122 operates in synchronization with the flip-flop 84, and the flip-flop 124 operates in synchronization with the flip-flop 90.
- the match detection unit 94 includes a logical product circuit (96, 98) and a logical sum circuit 102.
- the logical product circuit 96 outputs the logical product of the value sequentially detected by the flip-flop 84-1 at a plurality of timings and the expected value pattern. In other words, when both the H level comparison signal and the expected value pattern become H logic, an H logic signal is output.
- the AND circuit 98 is configured to detect the value sequentially detected by the flip-flop 84-2 at a plurality of timings, and the inverted signal of the expected value pattern. Output the logical product of. That is, when the L level comparison signal indicates H logic and the expected value pattern indicates L logic, an H logic signal is output.
- the logical sum circuit 102 outputs a logical sum of signals output from the logical product circuit 96 and the logical product circuit 98. That is, the logical sum circuit 102 outputs a match signal when either of the outputs of the logical product circuit 96 and the logical product circuit 98 becomes H logic.
- the AND circuit 110 outputs a logical product of match signals for the respective pins of the semiconductor device 300.
- a match signal is output when a match is detected for all pins of the semiconductor device 300 to be tested.
- the AND circuit 110 may output a logical product of match signals for the plurality of semiconductor devices 300.
- the flip-flop 88 outputs a reference strobe signal in synchronization with the flip-flop 84.
- the flip-flops 90 and 116 output the reference strobe signal received from the flip-flop 88 at a predetermined timing.
- the flip-flops (122, 124, 118) receive the reference strobe signal as an enable signal, and the flip-flop 118 outputs a match detection request signal (FLAGCY) in synchronization with the flip-flop 116.
- the logical product circuit 120 outputs a logical product of signals output from the flip-flop 116 and the flip-flop 118. That is, the reference strobe signal generated by the strobe controller 68 is output within the match detection request cycle.
- the signal output from the AND circuit 120 is input to the match control unit 48. That is, the AND circuit 120 outputs the reference strobe signal regardless of whether or not the match is detected in the match detection request cycle.
- the AND circuit 52 of the unmatch control unit 48 generates a signal having substantially the same pulse width as the period signal based on the reference strobe signal, similarly to the AND circuit 46 of the match control unit 42.
- the AND circuit 50 outputs a logical product of the inverted signal of the match signal and the output of the AND circuit 52. That is, the AND circuit 50 outputs the above-described pulse width signal as an unmatch signal when a match cannot be detected by the timing of the reference strobe signal within the match detection request cycle.
- the test apparatus 100 in this example can perform match detection at a plurality of timings by using the reference clock as a strobe signal within the match detection request cycle.
- a match detection request Discontinue the cruise and generate the next test cycle. For this reason, the efficiency of the test can be improved.
- match detection is performed by repeatedly generating a match detection request cycle. For this reason, the pattern when the match is not detected is stored in the flip-flop 24 and the like, and when the match is detected, it is necessary to repack the pattern stored in the flip-flop 24 and the like.
- the test apparatus 100 of this example it is not necessary to repeat the match detection request cycle by setting a sufficiently long time for the match detection request cycle and performing match detection at a plurality of timings in the cycle. Therefore, the pattern when a match is detected can be stored in advance in the flip-flop 24 and the like, and the test can be performed efficiently without having to repack the pattern of the match detection unit.
- FIG. 4 is a timing chart showing an example of signals output from the AND circuit 110 and the unmatch control unit 48 when a match is detected within the match detection request cycle.
- match detection is performed on the signal output from the output pins (0 to 7) of the semiconductor device 300.
- the match detection unit 94 performs match detection on each output signal using a reference clock from the start of the match detection request cycle to a predetermined end.
- the AND circuit 110 outputs a signal indicating H logic.
- the unmatch control unit 48 outputs an L logic signal when a match is detected for all output signals.
- FIG. 5 is a timing chart showing an example of signals output from the AND circuit 110 and the unmatch control unit 48 when no match is detected within the match detection request cycle.
- match detection is performed on the signal output from the output pins (0 to 7) of the semiconductor device 300.
- the AND circuit 110 since there is an output signal in which no match is detected, the AND circuit 110 outputs an L logic signal. Then, according to the timing of the reference strobe signal in the cycle, the unmatch control unit 48 outputs an unmatch signal.
- FIG. 6 is a flowchart showing an example of a test method according to the embodiment of the present invention. This In this test method, a semiconductor device is tested by the same method as the test apparatus 100 described with reference to FIGS.
- waveform information for testing a semiconductor device is sequentially read and output.
- waveform generation stage S 202 a waveform is generated based on the waveform information and input to the semiconductor device.
- match detection step S204 it is detected whether the output signal of the semiconductor device matches the expected value pattern in accordance with the match detection request cycle.
- the match detection step S204 as described in FIGS. 1 to 5, a sufficiently long time is set in the match detection request cycle, and matches are detected at a plurality of timings in the cycle.
- the match detection request cycle is ended before the end of the match detection request cycle in interrupt step S208. Then, it is determined whether all the test items have been completed (S210). If all the test items have been completed, the semiconductor device test is terminated. If all test items have not been completed, repeat the process from S200.
- test items it is determined whether or not all the test items have been completed (S214). If completed, the semiconductor device test is terminated, and if not completed, the test items are stored in the flip-flop 24. The refilled waveform information is refilled (S216), and the processes after S200 are repeated.
- the efficiency of the semiconductor device test can be improved.
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- Tests Of Electronic Circuits (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112005002099T DE112005002099T5 (de) | 2004-08-25 | 2005-07-26 | Prüfvorrichtung und Prüfverfahren |
| US11/704,708 US20080052584A1 (en) | 2004-08-25 | 2007-02-09 | Test apparatus and test method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-245883 | 2004-08-25 | ||
| JP2004245883A JP2006064479A (ja) | 2004-08-25 | 2004-08-25 | 試験装置、及び試験方法 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/704,708 Continuation US20080052584A1 (en) | 2004-08-25 | 2007-02-09 | Test apparatus and test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006022108A1 true WO2006022108A1 (ja) | 2006-03-02 |
Family
ID=35967327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/013643 Ceased WO2006022108A1 (ja) | 2004-08-25 | 2005-07-26 | 試験装置、及び試験方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080052584A1 (ja) |
| JP (1) | JP2006064479A (ja) |
| KR (1) | KR20070053775A (ja) |
| DE (1) | DE112005002099T5 (ja) |
| TW (1) | TW200609521A (ja) |
| WO (1) | WO2006022108A1 (ja) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5105827B2 (ja) * | 2006-10-31 | 2012-12-26 | アジレント・テクノロジーズ・インク | 波形データ発生器、波形発生器および半導体試験装置 |
| JP5047283B2 (ja) * | 2007-06-12 | 2012-10-10 | 株式会社アドバンテスト | 試験装置 |
| WO2010007472A1 (en) * | 2008-07-17 | 2010-01-21 | Freescale Semiconductor, Inc. | An integrated circuit die, an integrated circuit package and a method for connecting an integrated circuit die to an external device |
| TWI399551B (zh) * | 2009-06-26 | 2013-06-21 | Senao Networks Inc | Burner device and burner method |
| GB2561299B (en) | 2015-05-01 | 2019-04-03 | Imagination Tech Ltd | Control path verification of hardware design for pipelined process |
| KR102440440B1 (ko) * | 2020-12-16 | 2022-09-06 | 와이아이케이 주식회사 | 반도체 소자 검사 장치 |
| CN115047307B (zh) * | 2022-08-17 | 2022-11-25 | 浙江杭可仪器有限公司 | 一种半导体器件老化测试箱 |
| KR102599709B1 (ko) * | 2023-09-05 | 2023-11-08 | (주) 에이블리 | 반도체검사장비 핀 드라이버 장치 및 그 운용방법 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001311766A (ja) * | 2000-04-28 | 2001-11-09 | Advantest Corp | 半導体デバイス試験装置及び試験方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4251707B2 (ja) * | 1999-04-02 | 2009-04-08 | 株式会社アドバンテスト | 半導体デバイス試験装置及び試験方法 |
-
2004
- 2004-08-25 JP JP2004245883A patent/JP2006064479A/ja not_active Withdrawn
-
2005
- 2005-07-26 KR KR1020077006506A patent/KR20070053775A/ko not_active Withdrawn
- 2005-07-26 WO PCT/JP2005/013643 patent/WO2006022108A1/ja not_active Ceased
- 2005-07-26 DE DE112005002099T patent/DE112005002099T5/de not_active Withdrawn
- 2005-08-10 TW TW094127124A patent/TW200609521A/zh unknown
-
2007
- 2007-02-09 US US11/704,708 patent/US20080052584A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001311766A (ja) * | 2000-04-28 | 2001-11-09 | Advantest Corp | 半導体デバイス試験装置及び試験方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112005002099T5 (de) | 2007-08-02 |
| KR20070053775A (ko) | 2007-05-25 |
| TW200609521A (en) | 2006-03-16 |
| JP2006064479A (ja) | 2006-03-09 |
| US20080052584A1 (en) | 2008-02-28 |
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