JPH04137560A - Master slice lsi - Google Patents

Master slice lsi

Info

Publication number
JPH04137560A
JPH04137560A JP26255790A JP26255790A JPH04137560A JP H04137560 A JPH04137560 A JP H04137560A JP 26255790 A JP26255790 A JP 26255790A JP 26255790 A JP26255790 A JP 26255790A JP H04137560 A JPH04137560 A JP H04137560A
Authority
JP
Japan
Prior art keywords
resistance
master slice
resistance elements
elements
lsi
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
Application number
JP26255790A
Other languages
Japanese (ja)
Inventor
Michio Komota
古茂田 道夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP26255790A priority Critical patent/JPH04137560A/en
Publication of JPH04137560A publication Critical patent/JPH04137560A/en
Pending legal-status Critical Current

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  • Design And Manufacture Of Integrated Circuits (AREA)
  • Semiconductor Integrated Circuits (AREA)

Abstract

PURPOSE:To increase the mounting density of a printed board, by constituting a resistance circuit by utilizing the gate resistances of transistors arranged in the internal region of a master slice LSI as resistance elements, and obtaining a specified resistance value by shorting or opening a part of or all of the parts between the resistance elements. CONSTITUTION:Resistance elements are formed by utilizing gate resistances of transistors arranged in the internal region of a master slice LSI. The resistance elements and the parts between the resistance elements can be shorted or opened by a prescribed means. That is, the following are provided; resistance elements 3a-3d formed by utilizing the gate resistances of transistors in the internal region of the master slice LSI, a terminal 4 led out from one end of the resistance element 3a, an insulating film 5 separating the terminal 4 from one end of the resistance element 3c, and terminals 6a, 6b led out from both ends of a variable resistance device. A resistance value can be selected by whether an overvoltage is once applied across terminals 6a-6b. Thereby mounting density on a printed board can be improved.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明ハ、マスクスライスLSIに関し、特にチップ
完成後に、内部の抵抗値を変更できるようにし之マスタ
スライスLSIK:関するものである0 〔従来の技術〕 異なるLSIチップ間のクロックスキューヲ調整する方
法として、LSIチッグ完成後に、クロックラインの抵
抗値を調整する方法がある。
[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a mask slice LSI, and in particular to a master slice LSIK that allows changing the internal resistance value after the chip is completed. Technique] As a method of adjusting the clock skew between different LSI chips, there is a method of adjusting the resistance value of the clock line after the LSI chip is completed.

藁3図は従来のマスクスライスLI3工のクロックスキ
ューの調整方法の一例である。図において。
Figure 3 is an example of a method for adjusting clock skew in a conventional mask slice LI3 process. In fig.

(la)、 (lb)はLSIチップの外部に設けられ
たクロックスキュー調整用の可変抵抗、 (2a)、 
(2b)はLSIチップである。
(la), (lb) are variable resistors for clock skew adjustment provided outside the LSI chip, (2a),
(2b) is an LSI chip.

次に動作について説明する。第3図の回路においては、
可変抵抗(la)、 (lb)の抵抗値を変えて。
Next, the operation will be explained. In the circuit of Figure 3,
Change the resistance values of variable resistors (la) and (lb).

LSIチップ(2a)、 (2b)間のクロックスキュ
ーの管理が行なわれる。
Clock skew between LSI chips (2a) and (2b) is managed.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

従来のマスクスライスLSIは、可変抵抗装置が以上の
ように構成されているので、プリント基板上に、可変抵
抗素子を設ける必要があり、プリント基板上の素子数が
増加し、実装密度が下がるっまた%113エチッグ内の
任意の部分の抵抗値を調整することができないなどの問
題点があった。
In conventional mask slice LSIs, the variable resistance device is configured as described above, so it is necessary to provide a variable resistance element on the printed circuit board, which increases the number of elements on the printed circuit board and reduces the packaging density. Another problem was that it was not possible to adjust the resistance value of any part within the %113 etch.

この発明は、上記のような問題屯を解消するためになさ
れたもので、所定の抵抗値を得ることができるマスクス
ライスLSIを得ることを目的とするものである。
The present invention was made in order to solve the above-mentioned problems, and an object of the present invention is to obtain a mask slice LSI that can obtain a predetermined resistance value.

〔課題を4決するための手段〕 この発明に係るマスタスライスLSIは、マスクスライ
スLSIの内部領域にしきつめられたトランジスタのゲ
ート抵抗を利用した抵抗素子と。
[Means for Solving the Problem] A master slice LSI according to the present invention includes a resistor element that utilizes the gate resistance of a transistor confined in an internal region of a mask slice LSI.

その抵抗素子および抵抗素子間を所定の手段で短絡又は
開放できるようにし念ものである。
It is important to be able to short-circuit or open the resistive elements and the resistive elements by a predetermined means.

〔作 用〕[For production]

この発明におけるマスクスライスLSIは、マスクスラ
イスLEI工の内部領域にしきつめられたトランジスタ
のゲート抵抗を利用して抵抗素子を形成する。その抵抗
素子および抵抗素子間の一部又は、全てを短絡又は、開
放することにより、目的とする抵抗値を得ることができ
る。
The mask slice LSI according to the present invention forms a resistance element by using the gate resistance of a transistor tightly packed in the internal region of the mask slice LEI. A desired resistance value can be obtained by short-circuiting or opening the resistive element and some or all of the resistive elements.

〔実施例〕〔Example〕

以下この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.

この発明の一実施例を示す第1図において、(3a)?
 (3b)、 c3c)e (3d)は、マスクスライ
スLSIの内部領域にあるトランジスタのゲート抵抗を
利用した抵抗素子、(4ンは抵抗素子(3a)の一端よ
り取り出した端子、(5)Vi抵抗素子(3c)の一端
と、端子(4)を分離する絶縁膜、  (6a)、(6
b)はこの可変抵抗装置の両端より取り出した端子であ
る。
In FIG. 1 showing an embodiment of the present invention, (3a)?
(3b), c3c)e (3d) is a resistance element that uses the gate resistance of a transistor in the internal area of the mask slice LSI, (4) is a terminal taken out from one end of the resistance element (3a), (5) Vi an insulating film separating one end of the resistive element (3c) from the terminal (4), (6a), (6
b) are terminals taken out from both ends of this variable resistance device.

次に動作について説明する。このように構成された回路
においては、端子(4)と、抵抗素子(3c)の一端カ
;、絶R[(5)で分離されているため、端子(6a)
 −(51))間は、抵抗素子(3a)* (3b)の
直列抵抗で決まる抵抗値が得られる。この様な回路にお
いて、端子(6a)−(6b)間に所定の過電圧を印加
し。
Next, the operation will be explained. In the circuit configured in this way, since the terminal (4) and one end of the resistor element (3c) are separated by the resistive element (5), the terminal (6a)
-(51)), a resistance value determined by the series resistance of resistance element (3a)*(3b) is obtained. In such a circuit, a predetermined overvoltage is applied between terminals (6a) and (6b).

絶縁膜(5)の絶縁破壊を引き起こせば、抵抗素子(3
a)、 (3c)間が短絡され、端子(6a) −(6
b)間の抵抗値は、抵抗素子(3a)、 (3b)の直
列抵抗と、抵抗素子(3c)、(34)の直列抵抗を並
列接続した抵抗値となる。すなわち、端子(6a) −
(6b)間に一度過電圧を印加するかしないかで、抵抗
値を選択することができる。
If dielectric breakdown of the insulating film (5) is caused, the resistance element (3)
a) and (3c) are short-circuited, and terminals (6a) - (6
The resistance value between b) is the resistance value obtained by connecting the series resistance of resistance elements (3a) and (3b) and the series resistance of resistance elements (3c) and (34) in parallel. That is, terminal (6a) −
(6b) The resistance value can be selected by whether or not to apply an overvoltage once.

第2図は、この発明の他の実施例を示す図である。図中
、((3a)I (3b)I c3c)e c3a)e
 (6a)、 (6b)は。
FIG. 2 is a diagram showing another embodiment of the invention. In the figure, ((3a)I (3b)I c3c)e c3a)e
(6a) and (6b).

第1図と同一である。(7)は、抵抗素子(3c)と抵
抗素子(3d)との一端通しを短絡する配線である。
Same as FIG. 1. (7) is a wiring that short-circuits one end of the resistance element (3c) and the resistance element (3d).

このように構成された回路において5端子(6a)−(
6b)間に得られる抵抗値は、抵抗素子(3a)、(3
b)の直列抵抗と、抵抗素子(3a)t (3d)直列
抵抗を並列接続した抵抗値となっている。配掃(7)を
イオンビームを用いて切断すれば、端子(6a) −(
6b)間の抵抗値を抵抗素子(3a)* (3b)を直
列接続した値忙変更することができる。
In the circuit configured in this way, 5 terminals (6a)-(
The resistance value obtained between resistance elements (3a) and (3b) is the resistance value obtained between resistance elements (3a) and (3
The resistance value is obtained by connecting the series resistance of b) and the series resistance of resistance elements (3a) and (3d) in parallel. If the distribution (7) is cut using an ion beam, the terminal (6a) −(
The resistance value between the resistance elements (3a) and (3b) can be changed by connecting the resistance elements (3a)*(3b) in series.

また、上記実施例においては、過電圧、イオンビームを
用いて、抵抗素子間を短絡、開放する場合について述べ
念が、化学反応や熱あるいは、他の機械的、電気的外力
を用いても上記実毫例と同様の効果を奏する。
In addition, in the above embodiments, the case where the resistor elements are short-circuited or opened using an overvoltage or an ion beam is mentioned, but the above-mentioned method can also be achieved using a chemical reaction, heat, or other mechanical or electrical external force. It has the same effect as the example.

〔発明の効果〕〔Effect of the invention〕

以上のようにこの発明によれば、マスクスライスLSI
の内部領域にしきつめられたトランジスタのゲートを利
用して、可変抵抗素子回路を構成したので、プリント基
板の実装′M度を上げることができる。
As described above, according to the present invention, the mask slice LSI
Since the variable resistance element circuit is constructed using the gate of the transistor confined in the internal region of the circuit board, the degree of mounting of the printed circuit board can be increased.

才た。抵抗値を外力により設定できるようにし九ので、
抵抗値設定用の回路をLEI工内部あるいは外部に設け
る必要がな(、少ないスペースで回路を実現できるとい
う効果がある0
Talented. Since the resistance value can be set by external force,
There is no need to provide a circuit for setting the resistance value inside or outside the LEI construction (it has the effect of realizing the circuit in a small amount of space).

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例による回路図、第2図はこ
の発明の他の実施例を示す回路図%@3図は、従来の回
路図である。 図において%(3a)〜(3d)は抵抗素子、(4)は
端子%(5)は絶縁膜、(6a)+ (6b)は抵抗装
置の端子である。 なお1図中、同一符号は同一 又は相邑部分を示す。
FIG. 1 is a circuit diagram according to one embodiment of the present invention, and FIG. 2 is a circuit diagram showing another embodiment of the present invention. FIG. 3 is a conventional circuit diagram. In the figure, %(3a) to (3d) are resistance elements, (4) is a terminal, %(5) is an insulating film, and (6a)+(6b) is a terminal of a resistance device. In Figure 1, the same symbols indicate the same or similar parts.

Claims (1)

【特許請求の範囲】[Claims]  マスタスライスLSIの内部領域にしきつめられたト
ランジスタのゲート抵抗を抵抗素子として所定の抵抗回
路を構成し、上記抵抗素子間の一部又は、全てを所定の
手段で短絡又は開放して所定の抵抗値を得るようにした
可変抵抗装置を備えたマスタスライスLSI。
A predetermined resistance circuit is constructed using the gate resistance of a transistor tightly packed in the internal area of the master slice LSI as a resistance element, and a predetermined resistance value is obtained by short-circuiting or opening some or all of the resistor elements by a predetermined means. A master slice LSI equipped with a variable resistance device designed to obtain
JP26255790A 1990-09-27 1990-09-27 Master slice lsi Pending JPH04137560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26255790A JPH04137560A (en) 1990-09-27 1990-09-27 Master slice lsi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26255790A JPH04137560A (en) 1990-09-27 1990-09-27 Master slice lsi

Publications (1)

Publication Number Publication Date
JPH04137560A true JPH04137560A (en) 1992-05-12

Family

ID=17377465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26255790A Pending JPH04137560A (en) 1990-09-27 1990-09-27 Master slice lsi

Country Status (1)

Country Link
JP (1) JPH04137560A (en)

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