JPH04192454A - Semiconductor integrated circuit device - Google Patents

Abstract

PURPOSE:To decide a wiring region between blocks by wirings of signals except for setting of an operation mode of a peripheral circuit and to reduce the area of an internal circuit region by disposing a generator for a signal for setting the operation mode of the circuit as a plurality of peripheral circuits on the periphery of a semiconductor chip. CONSTITUTION:A generator for a signal for setting an operation mode of other peripheral circuit is disposed in a mode signal generating peripheral circuit block 3, and not disposed in an internal circuit block 2. A mode set signal of the peripheral circuit is wired to pass through the interior of the block and to circulate in a semiconductor chip. Accordingly, a signal wiring for transmitting a mode input signal to be applied from the exterior to the block, and wirings for transmitting the output of a mode set signal generator in the block to the mode set signal wiring of the peripheral circuit are eliminated. Thus, the area of the region of wirings between the blocks is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a semiconductor integrated circuit device, and particularly to improving the degree of integration.

[Conventional technology]

FIG. 2 is a conceptual diagram of a layout of a mode setting signal generation circuit, a circuit layout showing mode setting signal wiring, and wiring in a conventional semiconductor integrated circuit device.

In the figure, (1) is a peripheral circuit block, (2) is an internal circuit block, (3) is a signal generation circuit that sets the operating mode of peripheral circuit block (1), (4) is a mode setting signal wiring, (5) is a mode input wiring for transmitting a mode input applied from outside the semiconductor integrated circuit device to the setting signal generation circuit (3).

Next, the operation will be explained. In the semiconductor integrated circuit device shown in FIG. 2, the operation mode setting signal generation circuit (
3) is located inside the internal circuit block (2) and receives a mode input signal applied from outside the semiconductor integrated circuit device.
The signal is taken in through the mode input wiring (5) and processed, for example, by decoding, to generate a mode setting signal for the peripheral circuit.

Therefore, in a conventional semiconductor integrated circuit device, in the wiring area between the peripheral circuit block and the internal circuit block, there is a mode setting signal wiring that goes from the signal generating circuit for the peripheral circuit to the peripheral circuit, and vice versa. A wire for transmitting an external mode input signal always passes from the circuit to the mode setting signal generating circuit.

On the other hand, peripheral circuit blocks are located in the peripheral area of the semiconductor integrated circuit device, but peripheral circuit blocks are not necessarily placed in all areas of the peripheral area. Rather, there are often gaps between peripheral circuit blocks in the peripheral area.

[Problem to be solved by the invention]

Since the conventional semiconductor integrated circuit device is configured as described above, the inter-block wiring area between the internal circuit block and the peripheral circuit block is used for the wiring of signals related to setting the operating mode of the peripheral circuit. There was a problem that it was expanded for the purpose of the project.

The present invention has been made to solve the above-mentioned problems, and is intended to provide an inter-block wiring area between an internal circuit block and a peripheral circuit block for signals other than signals related to setting the operating mode of the peripheral circuit. An object of the present invention is to obtain a semiconductor integrated circuit device which can be determined by wiring and at the same time reduces the area of an internal circuit region.

[Means to solve the problem]

The semiconductor integrated circuit device according to the present invention includes one or more signal generating circuits for setting the operation mode of peripheral circuits.
A plurality of peripheral circuits are arranged around the semiconductor chip.

[Effect]

In the semiconductor integrated circuit device of the present invention, the mode setting wiring No. 43 for setting the operation mode of the peripheral circuit, which was conventionally wired in the wiring area between the internal circuit block and the peripheral circuit block, is moved to the wiring area. There is no need for wiring, and the i product of the wiring area can be reduced, and at the same time, the area of the internal circuit block can be reduced.

In other words, the degree of integration of the semiconductor chip can be improved,
Ru.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1(a) is a conceptual diagram of a circuit layout of a semiconductor integrated circuit device and mode setting signal wiring of peripheral circuits according to an embodiment of the present invention.

In FIG. 1 (al), (11, [2+, +41) are equivalent to those in a conventional semiconductor integrated circuit device, so their explanation will be omitted. (3) is the generation of a signal that sets the operation mode of other peripheral circuits. This is a peripheral circuit block that includes circuits.

In the figure, the circuit that generates the signal that sets the operation mode of other peripheral circuits is the mode signal generation peripheral circuit block (3
), and does not exist inside the internal circuit block (2). Further, a mode setting signal for the peripheral circuit is wired so as to pass through the peripheral circuit block and circulate inside the semiconductor chip.

Therefore, conventional semiconductor integrated circuit devices require signal wiring for transmitting mode input signals applied from the outside to internal circuit blocks, and peripheral circuit wiring that is routed around the inside of the semiconductor chip. By using the present invention, the mode setting signal wiring for transmitting the output of the mode setting signal generation circuit, which is present inside the internal circuit block, becomes unnecessary.

In addition, the area of the internal circuit block is reduced by eliminating the mode setting signal generation circuit, which was conventionally located inside the internal circuit block, or by placing it inside the peripheral circuit block and eliminating it from inside the internal circuit block. .

Further, although the peripheral circuit blocks are arranged in the peripheral region of the semiconductor chip, it is not necessarily the case that there are as many peripheral circuit blocks as can be arranged in the entire peripheral region.

Rather, there are often gaps between peripheral circuit blocks in the peripheral area. In such a case, the present invention can be implemented without enlarging the area of the peripheral area by arranging the mode setting peripheral circuit block in the empty area between the peripheral circuit blocks.

Next, an example of the configuration of a peripheral circuit block for setting a peripheral circuit operation mode, which includes a signal generation circuit for setting the operation mode of the peripheral circuit, will be shown.

FIG. 1(b) shows the above mode setting peripheral circuit block (
3) is a schematic diagram. In the figure, (6) is the band for making decisive connections with the outside of the semiconductor chip, and (7) is the power supply Vdd.
wiring, (8) is the power supply Vss wiring, (9) is the mode setting signal generation circuit area, 00) is the mode setting signal,
The wiring within the block is shown for transmitting the signal to the mode setting signal wiring that is routed around the inside of the semiconductor chip.

The mode input signal given from outside the semiconductor chip is
It is transmitted to the mode setting signal generation circuit (9) via the pad (6). In the generation circuit, the mode input signal is processed to create a mode setting signal for the peripheral circuit.

The mode setting signal is then transmitted to each peripheral circuit block through the mode setting signal wiring.

FIG. 1-C shows a logic diagram of an example of a mode setting signal generation circuit of a peripheral circuit.

〔Effect of the invention〕

As described above, according to the present invention, the internal circuit block and
In a semiconductor integrated circuit device configured with a plurality of peripheral circuit blocks and wiring connecting them, the above-mentioned problems can be achieved by eliminating the wiring related to the operation mode setting of the peripheral circuits among the internal circuit blocks and the peripheral circuit block wiring. This has the effect of reducing the area of wiring between blocks.

[Brief explanation of the drawing]

FIG. 1(a) is a conceptual diagram of a circuit device of a semiconductor integrated circuit device according to an embodiment of the present invention and signal wiring related to peripheral circuit operation mode setting, and FIG. a)
FIG. 1(c) is a logic diagram of an example of the peripheral circuit operation mode setting signal generating circuit, and FIG. 2 is a schematic diagram of the peripheral circuit block for setting the peripheral circuit operation mode of , is a conceptual diagram of circuit layout and signal wiring related to peripheral circuit operation mode setting. In the figure, (1) is the peripheral circuit block, (2) is the internal circuit block, (3) is the peripheral circuit block for setting the peripheral circuit operation mode, (4) is the mode setting signal wiring, (
6) is a pad for connecting to the outside of the semiconductor chip;
(7) C power supply Vdd wiring, (8) power supply VSS! i!
Line (9) is a peripheral circuit operation mode setting signal generation circuit. Further, in FIGS. 1(a) and 2, (I) is an internal circuit area, (II) is a wiring area between an internal circuit block and a peripheral circuit block, and (I) is a peripheral circuit area. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] In a semiconductor integrated circuit device configured by an internal circuit block, a plurality of peripheral circuit blocks, and wiring connecting them, one mode setting signal generation circuit for setting the operation mode of the plurality of peripheral circuits, Alternatively, a semiconductor integrated circuit device characterized in that a plurality of the circuit blocks are arranged in a peripheral region similarly to peripheral circuit blocks.