Semiconductor circuit, in particular for use in integrated module

 

(57) Abstract:

The invention relates to a semiconductor circuit that contains one work unit with the control circuit, for example with a microprocessor and data storage device, one initialization block unit of work or business units, one working unit is connected via one made releasable connecting line (1) with one initialization block. To increase the reliability of the initialization block after the completion of the manufacture of semiconductor circuits for a long time separated from their work unit due to the fact that the connecting lines are to be separated. To reduce the reactivation disconnected connection lines of the semiconductor circuit contains one connecting line (1) in connection with the initialization block and/or work unit potential line (2, 3), the initialization block and/or the working unit is made with the possibility of converting the inactive state when the potential connection line respectively one of the potential lines (2,3) with the connecting line (1) or, respectively, with one of the connecting lines. Effect: increase of spam changed the Oia in the integral module, which contains the following characteristics:

- at least one working unit with a control circuit, for example with a microprocessor and data storage device,

at least one initialization block for testing and/or to initialize a unit of work or business units;

- at least one working unit is connected via at least one is made releasable connecting line with at least one initialization block.

In the above respective restrictive of the semiconductor circuits of the memory device data is often made in the form of non-volatile, i.e. retains information when power is programmable data storage. In the manufacture of semiconductor circuits, for example, using the initialization block data is written in the storage device of the data. Further, it is possible to cause the unit of work using the initialization block in a state in which it may be subjected to testing. For this initialization block through the connecting line is connected with a working unit. Such connecting line made of conductive material, for example from the province of the La which utilize the appropriate restrictive of the semiconductor circuit, the initialization block after the manufacture of semiconductor circuits for a long time separated from their work unit. Due to this reliably deactivated function block initialization so that the corresponding unwanted changes are impossible. After making the appropriate restrictive of the semiconductor circuit above the line for this sever. This occurs, for example, by an electric flash, by laser cutting or by mechanical separation. In particular, in the case in which the connecting line is interrupted due to laser cutting or by mechanical separation, the semiconductor circuit then buried in an insulating material housing, which provides additional protection against unwanted changes.

To make the reactivation disconnected connection lines for the purposes of manipulation more difficult in the prior art it is known to arrange the connecting line lying on the possibility of a deep layer of semiconductor circuits. The free ends of the disconnected connectors can then be again connected to each other only particularly expensive and difficult way. This connector is dalene lying above the connecting line layers of semiconductor circuits without destroying the semiconductor circuit. After that then must be made conductive connection of the free ends of the connecting line. In practice, this usually does not happen, as appropriate restrictive of the semiconductor circuit due to the above-described measures are well protected from unwanted changes.

Despite the advantageous implementation of the relevant restrictive of the semiconductor circuits regarding unwanted reactivation of the initialization block, still it may happen that the semiconductor circuit is subject to change.

EP 0172108 A1 discloses a semiconductor circuit in the integrated module, and releasable connecting line between the schema and the output is protected at the expense connected to "earth" cover plate. The connector can be achieved by the test probe only if the test probe will penetrate this covering plate, resulting in a short circuit test probe. Therefore, the test probe cannot be read no signal from the connector. If the cover plate removed, disconnected the connection can be re-connected.

US 5473112 reveals the integral poluprovodnikovoi input/output contact pins with multiplexers. The control line multiplexers protected shielding lines that are at a certain potential. The study of semiconductor chips by reading electron beam or ion milling leads to short circuit the control line with a braided line, through which access through the input/output contact pins to a storage device becomes impossible.

The present invention therefore is to provide appropriate restrictive of the semiconductor circuit which has an improved protection against unwanted changes.

This problem is solved according to the invention by an appropriate restrictive of the semiconductor circuit which, in addition, contains the following features:

in the field, at least one connecting line is provided, at least one being in connection with the initialization block or, respectively, with blocks of initialization potential line;

the initialization block is executed with an opportunity of transition to the inactive state when the potential connection line or, respectively, at least one of them."

Underlying the invention the task is solved, in addition, by an appropriate restrictive of the semiconductor circuit, which includes the following features:

in the field, at least one connecting line is provided, at least one being in connection with a work unit or, respectively, at least one of the working units potential line;

- working unit is made with the possibility of converting the inactive state when the potential connection line or, respectively, at least one of the potential lines connecting line or, respectively, with at least one of the connecting lines.

With such potential lines reactivation disconnected connection lines is considerably complicated. The fact that the potential lines are located at close distance near the connecting line, with possibly a small width, namely in such a way that when you try to contact the connecting lines to restore electrical connections, there is an electrically conductive contact or a short circuit between the connecting line icii. When reading such short circuit the unit of work and/or initialization block becomes inactive, which makes it impossible for stalking and/or modify data in a storage device data and tracking functions of the work unit.

The potential lines are preferably on a particular, distinctive capabilities, which can especially easy to recognize a work unit or, respectively, the initialization block. Due to this, it is possible the rapid and reliable detection of attempts to repair the connector.

Next is the preferred, if the connector together with the potential line is "buried" in lying on the possibility of a deep layer of semiconductor circuits. If the attempt to manipulate the connecting line and the potential line is released, then the semiconductor circuit has a deep groove, in which the connector can only be very difficult to contact, without causing a short circuit with lying near potential line. Due to this, it turns out a highly reliable semiconductor circuit.

In the form of further development of the invention, at least one connecting line and the first circuit can be manufactured particularly simply.

In addition, in the region of the connecting line has at least two potential lines. With this execution with several potential lines around the connecting line is especially reliable form of execution corresponding to the invention of the semiconductor circuit. Namely, then it is almost impossible to gain access to the connectors without creating a conductive connection with a potential line that translates blocks of the semiconductor circuit in the inactive state. Due to this, it turns out a highly reliable semiconductor circuit.

Finally, according to the invention provides that the semiconductor circuit is surrounded by an insulating housing. In connection with such insulating housing exemption semiconductor circuits and connectors additionally difficult so that unwanted changes difficult.

The invention is explained below in more detail by the drawings on the same sample run.

Figure 1 shows a segment connecting lines corresponding to the invention of the semiconductor schematic top view;

figure 2 shows a segment of a connector of figure 1 in cross section;

Figo is.

Figure 1 shows a cutout of a corresponding to the invention of the semiconductor circuit.

A semiconductor circuit contains not shown in this view of the unit of work and is also not shown in this view, the initialization block, which is located between a connection through a connector 1 with a width of about 1 micron. After fabrication of semiconductor circuits connecting line 1 is disconnected at the place of separation A-Century In the area of the connecting line 1 and at a distance from it of about 1 μm is provided next to the first potential line 2 and the second potential line 3. Potential line 2 and the potential line 3 are at a certain potential, which can be read as a work unit, so also in the initialization block.

Figure 2 shows a cutout of a semiconductor circuit of figure 1 in place of separation And In cross-section.

As particularly well seen in this view, the connector 1, the first potential line 2 and the second potential line 3 are located in the deep layer of semiconductor circuits, surrounded by a housing 4.

Figure 3 shows a segment corresponding to the invention of the semiconductor circuit from figure 2 after you pop the/P> For this purpose the housing 4 is cleared to the height of the layer of semiconductor circuits, in which lie the connector 1, the first potential line 2 and the second potential line 3. In the area of separation And In came the groove 5, which passes into the housing 4 so that the connector 1 is free. If this were relieved first potential line 2 and the second potential line 3.

After filling in the grooves 5 of electrically conductive mass 6 the free ends of the connecting line 1 again electrically connected to each other. This also creates an electrically conductive connection between the connecting line 1, the first potential line 2 and the second potential line 3. It is queried as a work unit, and the initialization block so that both units are transferred to inactive status, which prevents the tracking data in the working unit.

1. Semiconductor circuit with improved protection from unwanted changes, containing at least one working unit with a control circuit and a storage device, and at least one initialization block for testing and/or initialization of the working unit or sootvestvenno releasable connecting line, at least one initialization block, characterized in that region, at least one connecting line (1) there is at least one connected to the block or blocks initialization potential line (2, 3), and the initialization block is executed with the opportunity to transition to an inactive state in the case of connecting at least one of the potential lines (2, 3) with at least one of the connecting lines (1).

2. Semiconductor circuit under item 1, characterized in that it is applied in the integral module.

3. Semiconductor circuit according to one of paragraphs. 1 and 2, characterized in that at least one connecting line (1) and at least one potential line (2, 3) are made parallel to one another.

4. Semiconductor circuit according to one of paragraphs. 1-3, characterized in that in the region of the connection line (1) is provided, at least two potential lines (2, 3).

5. Semiconductor circuit according to one of paragraphs. 1-4, characterized in that the semiconductor circuit is surrounded by an insulating housing (4).

6. Semiconductor circuit with improved protection from unwanted changes, containing at least one working unit of the simulation and/or initialization of a work unit or work units, in this case, at least one working unit is connected via at least one is made releasable connecting line with at least one initialization block, characterized in that region, at least one connecting line (1) is provided, at least one coupled with work unit or respectively at least one of the working units potential line (2, 3), and the unit of work is executed with the opportunity to transition to an inactive state in the case of connecting at least one of the potential lines (2, 3) with at least one of the connecting lines (1).

7. Semiconductor circuit according to p. 6, characterized in that it is applied in the integral module.

8. Semiconductor circuit according to one of paragraphs. 6 and 7, characterized in that at least one connecting line (1) and at least one potential line (2, 3) are made parallel to one another.

9. Semiconductor circuit according to any one of paragraphs. 6-8, characterized in that in the region of the connection line (1) is provided, at least two potential lines (2, 3).

10. Semiconductor circuit according to one of paragraphs. 6-9, characterized in that the semiconductor circuit OK

 

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