摘要:
There are provided a plurality of bridge circuits which convert the test data information from a common test bus connected to a plurality of memories of different access data widths and address decode logics to the inherent access data widths of each memory and also convert the test address information from the common test bus to the inherent bit format of each memory to supply the result to the corresponding memory. The test address information is supplied in parallel from the common test bus to a plurality of memories to realize the parallel tests. Accordingly, the test data information can be supplied in parallel to a plurality of memories of different data widths and the address scan direction in the respective memories for the test address information can be uniformed to the particular direction depending on the inherent bit format. Thereby, the memory test efficiency by the match pattern for a plurality of on-chip memories can be improved.
摘要:
There are provided a plurality of bridge circuits which convert the test data information from a common test bus connected to a plurality of memories of different access data widths and address decode logics to the inherent access data widths of each memory and also convert the test address information from the common test bus to the inherent bit format of each memory to supply the result to the corresponding memory. The test address information is supplied in parallel from the common test bus to a plurality of memories to realize the parallel tests. Accordingly, the test data information can be supplied in parallel to a plurality of memories of different data widths and the address scan direction in the respective memories for the test address information can be uniformed to the particular direction depending on the inherent bit format. Thereby, the memory test efficiency by the match pattern for a plurality of on-chip memories can be improved.
摘要:
There are provided a plurality of bridge circuits which convert the test data information from a common test bus connected to a plurality of memories of different access data widths and address decode logics to the inherent access data widths of each memory and also convert the test address information from the common test bus to the inherent bit format of each memory to supply the result to the corresponding memory. The test address information is supplied in parallel from the common test bus to a plurality of memories to realize the parallel tests. Accordingly, the test data information can be supplied in parallel to a plurality of memories of different data widths and the address scan direction in the respective memories for the test address information can be uniformed to the particular direction depending on the inherent bit format. Thereby, the memory test efficiency by the match pattern for a plurality of on-chip memories can be improved.
摘要:
Outside-cell wiring that extends the upper part of a macro cell to the direction of X axis is composed of the wiring layer of the upper layer than a terminal for a signal of the macro cell and this terminal is formed to extend in the direction of Y axis (direction that intersects the direction of X axis) so that the outside-cell wiring can be secured for a plurality of wiring channels. The macro cell and the outside-cell wiring are connected via this signal terminal.
摘要:
A semiconductor integrated circuit device provided with a first circuit block BLK1, a second circuit block DRV1 and a conversion circuit MIO1 for connecting the first circuit block to the second circuit block. The first circuit block includes a first mode for applying a supply voltage and a second mode for shutting off the supply voltage. The conversion circuit is provided with a function for maintaining the potential of an input node of the second circuit block at an operation potential, thereby suppressing a penetrating current flow when the first circuit block is in the second mode. The conversion circuit (MIO1 to MIO4) are commonly used for connecting circuit blocks.
摘要:
When threshold voltages of constituent transistors are reduced in order to operate an SRAM circuit at a low voltage, there is a problem in that a leakage current of the transistors is increased and, as a result, electric power consumption when the SRAM circuit is not operated while storing data is increased. Therefore, there is provided a technique for reducing the leakage current of MOS transistors in SRAM memory cells MC by controlling a potential of a source line ssl of the driver MOS transistors in the memory cells.
摘要:
A technique permitting the reduction in size of a semiconductor device is provided. In a BGA type semiconductor device with a semiconductor chip flip-chip-bonded onto a wiring substrate, bump electrodes of the semiconductor chip are coupled to lands formed at an upper surface of the wiring substrate. The lands at the upper surface of the wiring substrate are coupled electrically to solder balls formed on a lower surface of the wiring substrate. Therefore, the lands include first type lands with lead-out lines coupled thereto and second type lands with lead-out lines not coupled thereto but with vias formed just thereunder. The lands are arrayed in six or more rows at equal pitches in an advancing direction of the rows. However, a row-to-row pitch is not made an equal pitch. In land rows which are likely to cause a short-circuit, the pitch between adjacent rows is made large, while in land rows which are difficult to cause a short-circuit, the pitch between adjacent rows is made small. By so doing, both prevention of a short-circuit and improvement of the layout density of lands are attained at a time.
摘要:
A semiconductor integrated circuit device enhanced in design efficiency while achieving multi-functionalization and power saving is to be provided. The semiconductor integrated circuit device has first through third circuit blocks, and is placed in a first power supply state in which the operation of internal circuits in the first circuit block is guaranteed in accordance with an instruction from the third circuit block or a second power supply state in which the operation of the internal circuits is not guaranteed. The second circuit block has an input unit which receives signals supplied from the first circuit block, and the input unit of the second circuit block has an input circuit which, in accordance with a control signal sent from said third circuit block to said second circuit block, causes a specific signal level to be maintained in compliance with the operating voltage of the second circuit block irrespective of the signal supplied from the first circuit block when the third circuit block instructs the second power supply state to the first circuit block.
摘要:
When threshold voltages of constituent transistors are reduced in order to operate an SRAM circuit at a low voltage, there is a problem in that a leakage current of the transistors is increased and, as a result, electric power consumption when the SRAM circuit is not operated while storing data is increased. Therefore, there is provided a technique for reducing the leakage current of MOS transistors in SRAM memory cells MC by controlling a potential of a source line ssl of the driver MOS transistors in the memory cells.
摘要:
In a semiconductor integrated circuit device having plural layers of buried wirings, it is intended to prevent the occurrence of a discontinuity caused by stress migration at an interface between a plug connected at a bottom thereof to a buried wiring and the buried wiring. For example, in the case where the width of a first Cu wiring is not smaller than about 0.9 μm and is smaller than about 1.44 μm, and the width of a second Cu wiring and the diameter of a plug are about 0.18 μm, there are arranged two or more plugs which connect the first wirings and the second Cu wirings electrically with each other.