JP2986558B2 - Semiconductor device layout equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a layout device for a semiconductor device which handles logical data having no logical drawing information. 2. Description of the Related Art In recent years, with the spread of CAD (Computer Aided Design) devices, there have been cases where users use a plurality of CAD devices. For this reason, data has been exchanged between different types of CAD apparatuses.

[0002]

2. Description of the Related Art Conventionally, as interface data between CAD apparatuses, logical data 30 having only a netlist and no logical drawing information has been used as shown in FIG. Therefore, to designate a unique cell based on the logical data 30, the unique name or number of the cell is designated by key input from the keyboard.

[0003]

Therefore, different types of CAD are required.
When data is exchanged between devices, since there is no logical drawing information, the user interface with an advanced screen, that is, even a CAD device having a tablet or a mouse capable of indicating a unique cell on the screen, displays the unique cell instruction on the screen. However, the operation must be performed by a key input and an instruction must be given, which causes a problem that the operation efficiency is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is possible to specify a cell to be laid out on a display unit even in logical data without logical drawing information, thereby improving operation efficiency. The purpose is to be able to plan.

[0005]

FIG. 1 is a diagram illustrating the principle of the present invention. In a layout apparatus for laying out each cell based on logic data of a semiconductor device, a display unit 1 is for displaying a drawing, and a storage unit 2 is for storing logic data.

When the logical data stored in the storage unit 2 includes logical drawing information, the graphic display control unit 3 causes the display unit 1 to display a logical drawing composed of logical figures based on the logical drawing information. When the logic data stored in the storage unit 2 does not include the logic drawing information, the symbol display control unit 4 symbolizes each cell constituting the logic data into a graphic having an arbitrary shape and displays the symbolized graphic. It is displayed on the unit 1.

The coordinate input unit 5 is for designating any one of the logical figures in the logical drawing displayed on the display unit 1 or any one of the symbolized figures. Reference numeral 6 denotes an instruction of a logical graphic by the coordinate input unit 5 and display control of a logical drawing by the graphic display control unit 3 or an instruction of a symbolized graphic by the coordinate input unit 5 and symbolization by the symbol display control unit 4. The cells to be laid out are determined based on the display control of the figure.

[0008]

According to the present invention, when the logical data does not include the logical drawing information, each cell constituting the logical data is symbolized by the symbol display control unit 4 into a graphic of an arbitrary shape, and the symbolized graphic is displayed. It is displayed on the display unit 1. Then, the cells to be laid out are determined by the arithmetic unit 6 based on the instruction of the graphic by the coordinate input unit 5 and the display control of the symbolized graphic by the symbol display control unit 4.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a gate array layout apparatus will be described below with reference to FIGS. FIG. 2 is a block diagram showing one embodiment. The display control circuit 10 includes an arithmetic unit 11, a logical diagram graphic creating unit 12 as a graphic display control unit, and a symbol display control unit 13. The control circuit 10 has a CR as a display unit.
T14, a mouse 15 as a coordinate input unit is connected.

As shown in FIG. 3, the calculation unit 11 includes a data input unit 21, a determination unit 22, and the like. The data input unit 21 copies logical data from the logical data file 16 to the internal memory 17 and
7 to input logical data. Then, the internal memory 17
When copying logical data to the
Is to cause the internal memory 17 to hold a drawing flag indicating whether or not there is a logical drawing in the logical data. That is, the logical data file 16 stores, for example, logical data 31 having a logical drawing as shown in FIG. 4 or logical data 30 having only a netlist having no logical drawing information as shown in FIG. The data input unit 21 is a logical data 31 having a logical diagram shown in FIG.
, The drawing flag is set to “1”, and in the case of the logical data 30 of only the net list shown in FIG. 5, the drawing flag is set to “0”.

The determination unit 22 determines whether the logical data input by the data input unit 21 has logical drawing information based on the drawing flag. If the drawing flag is "1", that is, there is logical drawing information. In this case, control is transferred to the graphic display control unit 12, and when the drawing flag is “0”, that is, when there is no logical drawing information, control is transferred to the symbol display control unit 13.

The graphic display control unit 12 displays a logical drawing composed of logical figures on the screen of the CRT 14 as shown in FIG. 4, for example, based on the logical data provided with the logical drawing information input from the internal memory 22. Further, the symbol display control unit 13 includes a symbolizing operation unit 23, a symbol figure graphic creating unit 24 and the like as shown in FIG. For example, as shown in FIG. 5, the symbolizing operation unit 23 performs an operation for symbolizing each cell constituting the logical data into a graphic of an arbitrary shape based on the logical data of only the netlist. The symbol figure graphic creator 24 outputs the input / output terminals I01 to I0 as shown in FIG.
3 and O01, a symbolized figure (△) is created, and an inverter INV01, an AND circuit AND01,
Symbolic figures (等) are created for logic elements such as AND02 and OR circuit OR01, and a symbolized drawing 32 composed of these symbolic figures and terminal types or element types is converted to CRT1.
4 is displayed on the screen.

Then, using the mouse 15, a CRT
When any one logical figure of the logical drawing 31 (see FIG. 4) displayed on the screen 14 or any one of the symbolized figures of the symbolized drawing 32 (see FIG. 6) is designated, the designated The graphic is determined by the arithmetic unit 11 as a cell to be laid out. As described above, in the present embodiment, when the logical data 30 having only the net list and no logical drawing information is input as shown in FIG. 5, there is no logical drawing based on the drawing flag "0" at that time. , And a symbolized drawing 32 composed of a symbolized figure is displayed on the display unit instead of the logical figure as shown in FIG. Therefore, even for logical data without a logical drawing, the CRT 14
The user interface can be realized on the screen of the CRT 14, that is, the instruction of the specific cell can be performed on the screen of the CRT 14, thereby improving the operation efficiency.

In this embodiment, the operation unit 11, the graphic display control unit 12, and the symbol display control unit 13 are provided integrally. However, as shown in FIG. 7 and FIG. The same operation and effect as in the present embodiment can be obtained even if the present embodiment is implemented. That is, in FIG. 7, the graphic display control unit 12 and the symbol display control unit 13 are provided integrally and are separate from the arithmetic unit 11, and logical data is input from the internal memory 17 based on the graphic display signal from the arithmetic unit 11. If the drawing flag of the logical data is "1", the graphic display control unit 12
Displays a logical graphic on the screen of the CRT 14, and when the drawing flag is “0”, the symbol display control unit 13 displays each graphic symbolized on the CRT 14.

FIG. 8 shows an arithmetic unit 11 and a graphic display control unit 1.
2 and the symbol display control unit 13 are separately provided,
The arithmetic unit 11 outputs a graphic display signal to the graphic display control unit 12 when the drawing flag of the logical data in the internal memory 17 is “1”, and the graphic display control unit 12 converts the logical graphic into a CRT1.
4 is displayed on the screen of FIG. 4, and when the drawing flag is "0", a graphic display signal is output to the symbol display control unit 13 and each graphic symbolized by the symbol display control unit 13 is displayed on the screen of the CRT 14. Like that.

[0016]

As described above, according to the present invention, cells to be laid out can be specified on the display unit even in the case of logical data having no logical drawing information, and the operation efficiency can be improved. Has an excellent effect.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is a block diagram showing an embodiment.

FIG. 3 is a block diagram showing details of a display control circuit.

FIG. 4 is a diagram showing a logical diagram displayed by a graphic display control unit.

FIG. 5 is a diagram showing logical data having only a netlist.

FIG. 6 is a diagram showing a graphic displayed by a symbol display control unit.

FIG. 7 is a block diagram showing another embodiment.

FIG. 8 is a block diagram showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display part 2 Storage part 3 Graphic display control part 4 Symbol display control part 5 Coordinate input part 6 Operation part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G06F 17/50 H01L 21/82

Claims (1)

(57) [Claims] 1. A layout device for laying out each cell based on logical data of a semiconductor device, a display unit (1) for displaying a drawing, a storage unit (2) for storing logical data, and a storage unit. When the logical data stored in (2) includes logical drawing information, a graphic display control unit (3) for displaying a logical drawing composed of logical figures on the display unit (1) based on the logical drawing information. When the logical data stored in the storage unit (2) does not include the logical drawing information, each cell constituting the logical data is symbolized into a graphic having an arbitrary shape, and the symbolized graphic is displayed on the display unit. A symbol display control unit (4) to be displayed on (1), and one of the logical figures or symbolized figures in the logical drawing displayed on the display unit (1). Enter coordinates to indicate A power unit (5); and a calculation unit (6) for determining a cell to be laid out based on an instruction of a logical figure or an instruction of a symbolized figure by the coordinate input unit (5). Layout equipment for semiconductor devices.