WO2008069025A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- WO2008069025A1 WO2008069025A1 PCT/JP2007/072612 JP2007072612W WO2008069025A1 WO 2008069025 A1 WO2008069025 A1 WO 2008069025A1 JP 2007072612 W JP2007072612 W JP 2007072612W WO 2008069025 A1 WO2008069025 A1 WO 2008069025A1
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- WO
- WIPO (PCT)
- Prior art keywords
- circuit
- sub
- switch
- semiconductor device
- circuits
- Prior art date
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Classifications
-
- 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
- G01R31/30—Marginal testing, e.g. by varying supply voltage
- G01R31/3004—Current or voltage test
-
- 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
- G01R31/30—Marginal testing, e.g. by varying supply voltage
- G01R31/3004—Current or voltage test
- G01R31/3008—Quiescent current [IDDQ] test or leakage current test
Definitions
- the present invention relates to a semiconductor device, and more particularly, to a circuit design technique that enables an IDDQ (VDD supply current Quiescent) test of a miniaturized device.
- IDDQ VDD supply current Quiescent
- IDDQ quiescent power supply current
- IDDQ VDD su pply current Quiescent
- Patent Document 1 Japanese Patent Application Laid-Open No. 2004-170126
- Patent Document 1 The disclosure of Patent Document 1 described above is incorporated herein by reference. The following is an analysis of the related art according to the present invention.
- leakage current also referred to as “SD leakage current”
- SD leakage current also referred to as “SD leakage current”
- the width is getting larger.
- the level of integration increases, the number of transistors mounted on a single chip increases, and even if each transistor is normal, the sum of the SD leakage currents of the transistors in the chip becomes large, and the chip power supply Between terminals The quiescent power supply current flowing through the capacitor increases and its fluctuation range also increases.
- the power supply voltage of the device is reduced to reduce power consumption.
- the transistor's threshold voltage is lowered because the transistor's propagation delay time is increased by lowering the voltage. The current is increasing.
- an object of the present invention is to provide a semiconductor device capable of realizing an IDDQ test in a miniaturized CMOS device or the like.
- the inventor of the present application has reviewed the circuit design method (architecture) of the chip and provides a completely new circuit design method (on-chip IDDQ test) suitable for IDD Q test. IDDQ test is feasible.
- an existing tester or the like can be used to correctly determine whether it is an SD leak current or an abnormal leak current indicating a defect such as a bridge.
- the invention disclosed in this application is generally configured as follows.
- a semiconductor device is arranged between a plurality of sub-circuits obtained by dividing a circuit in the semiconductor device into a plurality of parts and at least one of the sub-circuits and a power source. And a built-in switch.
- the semiconductor device includes a plurality of switches respectively disposed between the sub-circuit and the power source, corresponding to each of the plurality of sub-circuits.
- the switch may include a circuit that includes at least one transistor, supplies a voltage to a control terminal of the transistor, and changes an on-resistance of the transistor.
- the switch includes a plurality of transistors connected in parallel, and outputs a logic signal to control terminals of the plurality of transistors connected in parallel.
- a circuit may be provided that supplies and controls on / off of the plurality of transistors connected in parallel.
- the voltage at the connection point between one subcircuit and one switch corresponding to the one subcircuit, the other subcircuit, and the other subcircuit correspond to each other. It is good also as a structure provided with the circuit which observes the difference voltage with the voltage of the connection point with this switch.
- the plurality of combined forces S of the subcircuit and the switch corresponding to the subcircuit are grouped into a plurality of groups, and a plurality of dulls are combined.
- One group of the loops may be turned on, the other group switches may be turned off, and the leakage current flowing in the power supply path of the sub-circuit of the group in which the switches are on may be measured.
- the semiconductor device according to the present invention may be configured such that one end of the plurality of groups of switches is connected in common and connected to a current monitor.
- the grouping of the sub-circuits is performed so that the total normal leakage current of the sub-circuits in one group is smaller than an assumed abnormal leakage current value. Is done! /
- the connection between the sub-circuit and the switch corresponding to the sub-circuit is on / off-controlled.
- a configuration may be provided that includes one voltage observation circuit for observing the terminal voltage of the switch to be connected.
- a plurality of combined forces S of the switch and the output switch corresponding to the subcircuit and the subcircuit are grouped into a plurality of groups.
- Each group may include the voltage observation circuit and the selection circuit.
- the switch is disposed between the sub-circuit and the high-order power source or between the sub-circuit and the low-order power source.
- the standard deviation of the leakage current distribution of the sub-circuit is ⁇ and the average is, the current that is a predetermined multiple of ⁇ to ⁇ in the leakage current distribution
- the number of sub-circuit divisions is determined so that the value is the same as the abnormal leakage current.
- a circuit in the semiconductor device is divided into a plurality ( ⁇ pieces) of sub-circuits, and the power supply current in a stationary state of the sub-circuits is measured. With circuit means.
- the circuit means includes: a switch inserted into a power path of the sub circuit; and a circuit for observing a terminal voltage of the switch,
- the switch functions as a resistance element for measuring the power supply current when the sub-circuit is stationary during the test. During normal operation, both ends of the switch inserted into the power path of the sub circuit are short-circuited.
- the semiconductor device according to the present invention may be configured to include means for variably controlling the resistance of the switch.
- the circuit means includes a switch inserted into the power path of the sub-circuit, and i (where i is l ⁇ i ⁇ N).
- the switch corresponding to the sub-circuit of the above-mentioned sub-circuit is turned on, and the power supply current in the stationary state of i sub-circuits (where l ⁇ i ⁇ N) is measured.
- the semiconductor integrated circuit according to the present invention includes a plurality of sub-circuits, the plurality of sub-circuits being grouped into a plurality of groups, and at least one of the plurality of groups. Circuit means for performing control to turn on the connection between the subcircuit belonging to the group and the power supply path and to turn off the connection between the subcircuit and the power supply path in another loop.
- the leakage current flowing in the power supply path of the sub circuit belonging to the turned-on group is measured.
- the resistance value of the path through which the leakage current of the sub circuit flows may be varied! /,
- the present invention by dividing the circuit in the chip into sub-circuits and measuring the leakage current of the sub-circuits, it is difficult for the normal leakage current to detect abnormal leakage current due to a defect. It is possible to solve the problem and to sort by IDDQ test.
- FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.
- FIG. 2 is a diagram schematically showing an example of leakage current distribution.
- FIG. 3 is a diagram showing a configuration of a first exemplary embodiment of the present invention.
- FIG. 5 is a diagram showing a configuration of a third exemplary embodiment of the present invention.
- FIG. 6 is a diagram showing a configuration of a fourth exemplary embodiment of the present invention.
- FIG. 7 is a diagram showing a comparative example.
- FIG. 8 is a diagram showing a configuration of a fifth exemplary embodiment of the present invention.
- FIG. 1 is a diagram for explaining an example of a configuration of a semiconductor device according to an embodiment of the present invention.
- the internal circuit (logic circuit) of chip 1 is divided into a plurality of circuit blocks (referred to as “sub-circuits”) 10 to;
- a plurality of voltage observation circuits may be provided for each of the switches corresponding to the plurality of sub-circuits, and the voltage between the terminals of the switches corresponding to the plurality of sub-circuits may be simultaneously measured by the voltage observation circuit.
- one voltage observation circuit may be provided for a plurality of switches corresponding to a plurality of sub-circuits, and the terminal voltages of the selected switches may be measured sequentially.
- the voltage observation circuit may be provided on the same chip as the sub circuit and the switch.
- switch 11 when measuring the quiescent power supply current of subcircuit 10 in FIG. 1, switch 11 is turned on and the other switches are turned off, and the power supply current flowing through switch 11 is measured with a current monitor. May be.
- Switch 11 and switch 11 are turned on, etc.
- the sub-circuit 10 and the sub-circuit 10 force, and the sum of the power supply currents flowing through the switch 11 and the switch 11 may be measured with a current monitor.
- the leakage current flowing in the observation target sub-circuit is observed as the current between the power supply terminals.
- Each subcircuit is divided so that the normal leakage current flowing through the subcircuit has a current value smaller than the abnormal leakage current due to the defect.
- FIG. 2A and 2B are diagrams schematically showing an example of the leakage current distribution, where the horizontal axis is a logarithmic leakage current, and the vertical axis is a number (frequency).
- Fig. 2 (A) shows the leakage current distribution as a design rule, for example, the 250 nm rule.
- Fig. 2 (B) shows the distribution of leakage current at 90 nm.
- the value of the abnormal leakage current due to the defect is sufficiently larger than the leakage current of the entire chip. For this reason, the defective chip can be selected by measuring the leakage current of the entire chip. You can do another. In other words, it is not necessary to divide the internal circuit in the chip into subcircuits for the IDDQ test for CMOS devices conforming to 250 nm Norail. Therefore, it is possible to screen the chip.
- the entire chip is divided into sub-circuits, and leakage currents of the individual sub-circuits are individually observed. All switches of subcircuits other than the subcircuit to be observed are turned off.
- the leakage current of the sub-circuit can be made smaller than the abnormal leakage current of the defect. For this reason, defective chips can be selected by observing the leakage current of each sub-circuit.
- Fig. 2 (B) where the leakage current of the entire chip overlaps with the abnormal leakage current of the defect, increasing the number of subcircuit divisions (each transistor has an upper limit on the number of subcircuit divisions) increases the leakage current of each subcircuit. The average becomes smaller and does not overlap with the abnormal leakage current of the defect.
- the value of the abnormal leakage current can be determined in advance based on the on-state current of the transistor. Further, based on the distribution information of the observed values of leakage currents of a plurality of chips, a chip having a leakage current that is clearly larger than others may be determined to be due to abnormal leakage current.
- the circuit configuration of the present invention will be described with reference to some specific examples.
- FIG. 3 is a diagram showing the configuration of an embodiment of the present invention.
- the semiconductor device of this example includes a plurality of (N) subcircuits.
- the deviation is also set to a high threshold, and the switch 11
- the resistance between the drain and source of 1 to 11 (ON resistance) is R, and the subcircuit 10 N 1 to
- Abnormal leakage current flows in the power supply current in a stationary state where there are no faults in the
- xlds is a voltage observation circuit 13
- the predetermined voltage value determines a range in which the maximum value Ids of the sum of the SD leakage currents of the transistors in the sub circuit is a normal value, and when the maximum value Ids is out of the normal value, the voltage between the terminals of the switch is It becomes larger than a predetermined voltage value.
- the resistance R (on-resistance) between the drain and the source of the switches 11 to 11 is the switch 11
- the power control circuit 12 makes the voltage difference of Rxlds the highest voltage observation sensitivity of the voltage observation circuits 13-13.
- the gate voltage is adjusted. That is, the power control circuit 12 includes the sub circuit 10
- the power control circuit 12 variably controls the analog voltage supplied to the gates of the switches 11 to 11.
- the abnormal leakage current due to defects is If the leakage current of each sub-circuit is divided so that it is on the order of 1/10 of the abnormal leakage current due to defects, the voltage between terminals of switches 11 to 11
- the power control circuit 12 makes the switch 11 to 10 so that the on-resistance becomes a high resistance of about 10 6 ⁇ (mega ⁇ ) (switches 11 to 11 are substantially off).
- Switches 11 to 11 show that the leakage current below the threshold is
- the voltage observation circuits 13 to 13 may be configured with a variable gain amplifier (variable voltage range configuration).
- the power control circuit 12 determines the gate voltage (ON resistance) of switches 11 to 11 during the IDDQ test.
- the SD leakage current of the transistors in the subcircuits 10 to 10 is caused by the miniaturization of the transistors.
- the internal circuit of the chip is divided into a plurality of sub-circuits 10 to 10 and
- the number of transistors in one sub circuit When the number of transistors in one sub circuit is reduced, the number of sub circuits increases. For example, in the case of ⁇ division in Fig. 2 (B), the number of sub circuits is larger than that in ⁇ division). It is possible to determine whether the current is a leak current or an abnormal leak current.
- IDDQ testing which has been difficult to achieve in miniaturized CM OS devices, can be performed by adding one switch and one voltage observation circuit to each sub-circuit.
- FIG. 4 is a diagram showing the configuration of the second exemplary embodiment of the present invention.
- the resistance between the source terminal and the drain terminal of each of the switches 11 to 11 is as follows.
- the power control circuit 12 applies an analog voltage to the gate terminals of the switches 11 to 11, respectively. Supply.
- Switches 11 to 11 are transistors (NMOS transistors) having a small channel width (W).
- one switch 11 in FIG. 1 is composed of a plurality (m) of transistors 11 to 11 connected in parallel, and for a plurality of transistors 11 to 11 connected in parallel, By varying the number of transistors in the on state and the off state, the resistance between both ends of the switches 11 to 11 is varied.
- the resistance value of the resistor R of the switch 11 connected to the sub circuit is variably controlled by changing the number of transistors 11 to 11 that are turned on in parallel. Is done. Since ON / OFF of the transistors 11 to 11 connected in parallel is controlled by supplying a binary (logic) signal (power supply voltage VDD and GND potential) to the gate, as in the first embodiment. In addition, it is not necessary to supply an analog voltage to the gate of the switch.
- the channel width (W) of the transistors 11 to 11 connected in parallel may be 1 / m of the size of the switch 11 in FIG. Note that all NMOS transistors constituting the switches 11- to 11 have a high threshold value.
- FIG. 5 is a diagram showing the configuration of the third exemplary embodiment of the present invention.
- this embodiment includes a voltage observation circuit 13 that measures the difference potential between the voltage at the connection point between the subcircuit 10 and the switch 11 and the voltage at the connection point between the subcircuit 10 and the switch 11. Yes.
- the voltage observation circuit 13 compares the voltage of the two switches 11 and 11 corresponding to the two subcircuits 10 and 10 with the voltage observation circuit 13, if an abnormal leakage current flows in one subcircuit, two The potential difference between the terminal voltages of switches 11 and 11 becomes large, and it is detected that one of the sub-circuits is defective.
- FIG. 6 is a diagram showing the configuration of the fourth exemplary embodiment of the present invention.
- the subcircuits 10 to 10 are grouped.
- the sub-circuits in the chip are grouped so that the magnitude of the normal leakage current of the sub-circuits in one group is smaller than the expected abnormal leakage current value S.
- group A and group B are grouped.
- the GND in the same gnole may be short-circuited.
- the current monitor 14 detects the leakage current of the group where the switch is on, and detects whether an abnormal leakage current is flowing.
- FIG. 7 is a diagram showing a comparative example of the present invention.
- GND side of subcircuits 10 to 10 GND side of subcircuits 10 to 10
- FIG. 8 is a diagram showing the configuration of the fifth exemplary embodiment of the present invention. Referring to FIG. 8, in this embodiment, each of the sub-circuits 10 to 10 is connected via output switches 15 to 15 respectively.
- Output switches 15 to 15 are each a CMOS transistor.
- the selection signal from the selection circuit 16 and its inverted signal (the input of the selection signal is controlled.
- the voltage observation circuit 13 is provided in common for the plurality of sub-circuits 10 to 10.
- the circuit 13 measures the voltage drop Rxlds due to the leakage current flowing in one sub-circuit selected by the selection circuit 16. Also in this embodiment, as in the fourth embodiment, a plurality of sub-circuits in the chip are grouped into several groups, and a voltage observation circuit and a selection circuit are provided for each group. And a plurality of groups may be tested in parallel.
- the NMOS transistor connected between the sub-circuits 10 to 10 and the GND.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/516,583 US8330483B2 (en) | 2006-11-29 | 2007-11-22 | Semiconductor device to detect abnormal leakage current caused by a defect |
JP2008548218A JPWO2008069025A1 (ja) | 2006-11-29 | 2007-11-22 | 半導体装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006322149 | 2006-11-29 | ||
JP2006-322149 | 2006-11-29 |
Publications (1)
Publication Number | Publication Date |
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WO2008069025A1 true WO2008069025A1 (ja) | 2008-06-12 |
Family
ID=39491929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/072612 WO2008069025A1 (ja) | 2006-11-29 | 2007-11-22 | 半導体装置 |
Country Status (3)
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US (1) | US8330483B2 (ja) |
JP (1) | JPWO2008069025A1 (ja) |
WO (1) | WO2008069025A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4835856B2 (ja) * | 2005-01-06 | 2011-12-14 | 日本電気株式会社 | 半導体集積回路装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111158967B (zh) * | 2019-12-31 | 2021-06-08 | 北京百度网讯科技有限公司 | 人工智能芯片测试方法、装置、设备及存储介质 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH09101347A (ja) * | 1995-10-05 | 1997-04-15 | Mitsubishi Electric Corp | 半導体装置 |
JPH1114707A (ja) * | 1997-06-20 | 1999-01-22 | Nec Corp | 半導体装置 |
WO2000011486A1 (fr) * | 1998-08-24 | 2000-03-02 | Hitachi, Ltd. | Circuit integre a semi-conducteur |
JP2000206174A (ja) * | 1999-01-14 | 2000-07-28 | Matsushita Electric Ind Co Ltd | 半導体装置の検査方法 |
JP2000286387A (ja) * | 1999-03-30 | 2000-10-13 | Toshiba Corp | 半導体装置 |
JP2001091566A (ja) * | 1999-09-22 | 2001-04-06 | Sony Corp | Cmos集積回路の試験方法および解析方法 |
JP2002277503A (ja) * | 2001-03-22 | 2002-09-25 | Hitachi Ltd | 半導体集積回路装置 |
JP2003258612A (ja) * | 2002-03-06 | 2003-09-12 | Nec Corp | 半導体回路及び半導体回路を用いた半導体集積回路装置 |
JP2004257815A (ja) * | 2003-02-25 | 2004-09-16 | Matsushita Electric Ind Co Ltd | 半導体集積回路の検査方法および半導体集積回路装置 |
Family Cites Families (5)
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NL8900050A (nl) * | 1989-01-10 | 1990-08-01 | Philips Nv | Inrichting voor het meten van een ruststroom van een geintegreerde monolitische digitale schakeling, geintegreerde monolitische digitale schakeling voorzien van een dergelijke inrichting en testapparaat voorzien van een dergelijke inrichting. |
US5742177A (en) * | 1996-09-27 | 1998-04-21 | Intel Corporation | Method for testing a semiconductor device by measuring quiescent currents (IDDQ) at two different temperatures |
EP1635183B1 (en) * | 2002-07-03 | 2007-11-21 | Q-Star Test N.V. | Device for monitoring quiescent current of an electronic device |
JP2004170126A (ja) | 2002-11-18 | 2004-06-17 | Matsushita Electric Ind Co Ltd | ノード論理固定回路およびiddq試験方法 |
JP2005057256A (ja) * | 2003-08-04 | 2005-03-03 | Samsung Electronics Co Ltd | 漏洩電流を利用した半導体検査装置および漏洩電流補償システム |
-
2007
- 2007-11-22 WO PCT/JP2007/072612 patent/WO2008069025A1/ja active Application Filing
- 2007-11-22 US US12/516,583 patent/US8330483B2/en not_active Expired - Fee Related
- 2007-11-22 JP JP2008548218A patent/JPWO2008069025A1/ja not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09101347A (ja) * | 1995-10-05 | 1997-04-15 | Mitsubishi Electric Corp | 半導体装置 |
JPH1114707A (ja) * | 1997-06-20 | 1999-01-22 | Nec Corp | 半導体装置 |
WO2000011486A1 (fr) * | 1998-08-24 | 2000-03-02 | Hitachi, Ltd. | Circuit integre a semi-conducteur |
JP2000206174A (ja) * | 1999-01-14 | 2000-07-28 | Matsushita Electric Ind Co Ltd | 半導体装置の検査方法 |
JP2000286387A (ja) * | 1999-03-30 | 2000-10-13 | Toshiba Corp | 半導体装置 |
JP2001091566A (ja) * | 1999-09-22 | 2001-04-06 | Sony Corp | Cmos集積回路の試験方法および解析方法 |
JP2002277503A (ja) * | 2001-03-22 | 2002-09-25 | Hitachi Ltd | 半導体集積回路装置 |
JP2003258612A (ja) * | 2002-03-06 | 2003-09-12 | Nec Corp | 半導体回路及び半導体回路を用いた半導体集積回路装置 |
JP2004257815A (ja) * | 2003-02-25 | 2004-09-16 | Matsushita Electric Ind Co Ltd | 半導体集積回路の検査方法および半導体集積回路装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4835856B2 (ja) * | 2005-01-06 | 2011-12-14 | 日本電気株式会社 | 半導体集積回路装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2008069025A1 (ja) | 2010-03-18 |
US8330483B2 (en) | 2012-12-11 |
US20100066401A1 (en) | 2010-03-18 |
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