摘要:
A semiconductor integrated circuit device includes: a master chip(203) including a basic cell region(201) having a plurality of basic cell arrays(206) arranged thereon, and an input/output cell region(202) having a plurality of input/output cells(207) arranged along the periphery of the basic cell region; a first wiring layer formed on the basic cell region and the input/output cell region via a first insulation layer having contact holes at predetermined positions, the first wiring layer including fixed wirings(LA,508); and a second wiring layer formed on the first wiring layer via a second insulation layer having through holes at predetermined positions, the second wiring layer including programmed wirings(LB,507). Only the wiring pattern of the second wiring layer is suitably changed in accordance with conditions of circuits applied to the input/output cell region and the basic cell region in regions corresponding to the input/output cell region and the basic cell region, thereby greatly reducing a turnaround time of the device.
摘要:
57 A chip on chip type IC is provided with a checking circuit to check electrically the perfectness of bondings (1-n) between the upper chip (B) and the lower chip (A). The checking circuit is composed of two types of circuits, one checks the group of bonding pairs (1-n) which transfers the signals from the lower chip to the upper chip, and the other one checks a second group of bonding pairs which transfers the signals from the upper chip to the lower chip. By means of a control signal supplied to a control terminal (18), the checking circuit is switched to an operation mode or to a checking mode. In the operation mode, the checking circuit is separated from the inner circuit or the lower chip and the IC operates normally. In the checking mode, test signals applied to test terminals (17) are transferred to the upper chip (B) and sent back to the lower chip (A), to be compared with the original test signals, thus enabling the perfectness of the bondings to be checked from the lower chip side.
摘要:
A semiconductor integrated circuit device includes: a master chip(203) including a basic cell region(201) having a plurality of basic cell arrays(206) arranged thereon, and an input/output cell region(202) having a plurality of input/output cells(207) arranged along the periphery of the basic cell region; a first wiring layer formed on the basic cell region and the input/output cell region via a first insulation layer having contact holes at predetermined positions, the first wiring layer including fixed wirings(LA,508); and a second wiring layer formed on the first wiring layer via a second insulation layer having through holes at predetermined positions, the second wiring layer including programmed wirings(LB,507). Only the wiring pattern of the second wiring layer is suitably changed in accordance with conditions of circuits applied to the input/output cell region and the basic cell region in regions corresponding to the input/output cell region and the basic cell region, thereby greatly reducing a turnaround time of the device.
摘要:
A semiconductor device comprises a test signal generating circuit (12) for generating a test signal having an arbitrary frequency, a first buffer (13) for selectively outputting one of the test signal and an external input signal at least one test circuit (15) supplied with an output signal of the first buffer (13), an external output terminal (30), a logic circuit (14), a second buffer (16) for selectively supplying to the external terminal (30) one of the test signals from the test circuit (15) and an output signal of the logic circuit (14), and a switching 10 signal generating circuit (11) for generating switching signals for the first and second buffers (13,16). The state of the test circuit (15) is checked by use of the test signal to indirectly determine the state of the logic circuit (14).