JPH0260334U - - Google Patents
Info
- Publication number
- JPH0260334U JPH0260334U JP13863488U JP13863488U JPH0260334U JP H0260334 U JPH0260334 U JP H0260334U JP 13863488 U JP13863488 U JP 13863488U JP 13863488 U JP13863488 U JP 13863488U JP H0260334 U JPH0260334 U JP H0260334U
- Authority
- JP
- Japan
- Prior art keywords
- clock signal
- terminals
- cell
- automatic placement
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 1
Description
第1図は本考案の自動配置配線用セルの一実施
例図、第2図は上記のセルを用いたシフトレジス
タの回路ブロツク図、第3図は該シフトレジスタ
のレイアウト図、第4図は該シフトレジスタのタ
イミングチヤート、第5図は従来のD型フリツプ
フロツプの一例図、第6図は従来のシフトレジス
タの回路ブロツク図、第7図は第6図の回路のタ
イミングチヤート、第8図は誤動作を生じた場合
のタイミングチヤート、第9図は従来のセルを用
いて自動配置配線でレイアウトを行つた場合の一
例図である。
〈符号の説明〉、D……データ入力端子、CI
N……クロツク信号入力端子、COUT……クロ
ツク信号出力端子、Q,……出力端子、R……
リセツト端子、F0〜F11,Fn……D型フリ
ツプフロツプ、Q0〜Qn……データ出力。
FIG. 1 is a diagram of an embodiment of the automatic placement and routing cell of the present invention, FIG. 2 is a circuit block diagram of a shift register using the above cell, FIG. 3 is a layout diagram of the shift register, and FIG. 5 is an example of a conventional D-type flip-flop, FIG. 6 is a circuit block diagram of a conventional shift register, FIG. 7 is a timing chart of the circuit in FIG. 6, and FIG. 8 is a timing chart of the shift register. A timing chart in the case of a malfunction is shown in FIG. 9, which is an example of a layout performed by automatic placement and wiring using conventional cells. <Explanation of symbols>, D...Data input terminal, CI
N...Clock signal input terminal, COUT...Clock signal output terminal, Q,...Output terminal, R...
Reset terminal, F0 to F11 , Fn...D flip-flop, Q0 to Qn...data output.
Claims (1)
るセルにおいて、クロツク信号が入力する端子と
、該入力したクロツク信号をそのまま若しくは所
定の遅延を持たせて出力する端子とを別個に設け
たことを特徴とする自動配置配線用セル。 A cell used in a circuit that operates in synchronization with a clock signal is characterized by having separate terminals for inputting the clock signal and terminals for outputting the input clock signal as is or with a predetermined delay. A cell for automatic placement and routing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13863488U JPH0260334U (en) | 1988-10-26 | 1988-10-26 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13863488U JPH0260334U (en) | 1988-10-26 | 1988-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0260334U true JPH0260334U (en) | 1990-05-02 |
Family
ID=31401149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13863488U Pending JPH0260334U (en) | 1988-10-26 | 1988-10-26 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0260334U (en) |
-
1988
- 1988-10-26 JP JP13863488U patent/JPH0260334U/ja active Pending
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