JPH02264461A - Integrated circuit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to integrated circuits, and in particular relates to an improvement in the interface section with the outside. [Prior Art] Fig. 2 shows a conventional integrated circuit package. FIG. 3 is a plan view showing an example. In the figure, (1) is the package, (2) is the pin for connecting the external circuit and the integrated circuit, (3) is the wire for connecting the chip (4) and pin (2), and (5) is the integrated circuit. The functional part (6) is the functional part that performs the original function of the circuit.
), (7) is the input/output line (6)
and with a bonding pad for connecting the wire (3).

An integrated circuit is constructed from these.

I will explain the next work. In FIG. 2, input/output from the functional section (5) of the chip (4) to the external circuit is performed as follows.

Inside the chip (4), input/output lines (6) taken out from the functional section (5) are individually connected to corresponding bonding pads (7).

In addition, connections between the bonding pads (7) and the respective pins (2) are made via wires (3), and these connections connect the functional parts (5) of the chip (4) to external circuits.
Input/output from is realized.

[Problem to be solved by the invention]

Since conventional integrated circuits are configured as described above, there is a problem in that the functions of each pin are fixed.

This invention was made to solve the above-mentioned problems, and it is an object of the present invention to make it possible to arbitrarily replace the functions of each pin.

[Means to solve the problem]

The integrated circuit according to the present invention includes an input/output line (6) taken out from the functional section (5) in FIG. 2 and a bonding pad (7).
) with a switching circuit between them.

[Effect]

In the switching circuit according to the present invention, the input/output line (6) taken out from the functional section (5) in FIG. 2 can be connected to any bonding pad (7).

〔Example〕

FIG. 1 is a plan view showing an integrated circuit package showing an embodiment of the present invention. In the figure, (1) to (7) are the same as those shown in the conventional example of FIG. 2, so their explanation will be omitted. (8) is a switching circuit that can connect an input/output line (6) taken out from the functional section (5) and an arbitrary bonding pad (7), and an integrated circuit is constructed from these.

Next, the operation will be explained. Input/output from the functional section (5) of the external circuit block (4) is performed as follows.

Inside the chip (4), input/output lines (6) taken out from the functional section (5) are optionally connected to corresponding bonding pads (7) via switching circuits (8).

Furthermore, connections between the bonding pads (7) and the corresponding pins (2) are made via wires (3), and these connections allow the functional parts (5) of the chip (4) to be connected to external circuits.
) is realized.

In the above embodiment, the integrated circuit has a one-chip configuration, but it may have a plurality of chips.

〔Effect of the invention〕

As described above, according to the present invention, since the switching circuit is provided in the interface section with the outside, the pin arrangement can be freely selected. This has the effect of simplifying the wiring of the external circuit and reducing costs.

[Brief explanation of drawings]

FIG. 1 is a plan view of an integrated circuit package according to an embodiment of the present invention, and FIG. 2 is a plan view of a conventional integrated circuit package. In the figure, (1) is the package, (2) is the pin, (3
) is wire, (4) is chip, (5) is function, (6
) is an input/output line, (7) is a bonding pad, and (8) is a switching circuit. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] An integrated circuit characterized in that an interface section for connecting a functional section and a pin includes a switching circuit that can arbitrarily select a pin to be connected to an input/output line taken out from the functional section.