JPH02152095A - Semiconductor memory - Google Patents

Semiconductor memory

Info

Publication number
JPH02152095A
JPH02152095A JP63306554A JP30655488A JPH02152095A JP H02152095 A JPH02152095 A JP H02152095A JP 63306554 A JP63306554 A JP 63306554A JP 30655488 A JP30655488 A JP 30655488A JP H02152095 A JPH02152095 A JP H02152095A
Authority
JP
Japan
Prior art keywords
memory array
preamplifiers
output
blocks
data
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
JP63306554A
Other languages
Japanese (ja)
Inventor
Mutsumi Yamanaka
山中 睦
Kazutoshi Hirayama
平山 和俊
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 JP63306554A priority Critical patent/JPH02152095A/en
Publication of JPH02152095A publication Critical patent/JPH02152095A/en
Pending legal-status Critical Current

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  • Static Random-Access Memory (AREA)
  • Dram (AREA)

Abstract

PURPOSE:To limit a current flowing in preamplifiers and to reduce a power- supply current at operating time by operating only a preamplifier connected to a selected memory array block and making the other preamplifiers into a non-operating state. CONSTITUTION:The data of memory array blocks 1-4 are inputted to respectively connected preamplifiers 5-8, passes through output control circuits 9-12, and outputted to an output terminal 17. Further, signals 13-16 to select the data of the blocks 1-4 to be outputted are inputted to the control circuits 9-12 and also inputted to the preamplifiers 5-8. Thus, while the preamplifiers connected to the blocks not to be selected never operate, the current flows only in the preamplifier connected to the selected block. Consequently, the power-supply current at the operating time can be reduced.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は半導体装置に関し、特に動作時の電源電流を
低減するダイナミックRAM全提供するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to semiconductor devices, and particularly to a dynamic RAM that reduces power supply current during operation.

〔従来の技術〕[Conventional technology]

第3図は従来の半導体装置の出力回路の回路図を示す。 FIG. 3 shows a circuit diagram of an output circuit of a conventional semiconductor device.

図において、(1)〜(4)はメモリアレイブロック。In the figure, (1) to (4) are memory array blocks.

(6)〜(8)はそれぞれメモリアレイブロック(1)
〜(4)に接続さnているfrtJム増幅器、(9)〜
(ロ)は曲直増幅器(6)〜(8)に接続さnている出
力制御回路、Q3〜OQは出力したいメモリアレイブロ
ック(1)〜(4)のデータを選択する信号、aηは出
力端子である。
(6) to (8) are each memory array block (1)
The frtJ amplifier connected to ~(4), (9)~
(b) is an output control circuit connected to the linear amplifiers (6) to (8), Q3 to OQ are signals for selecting data of memory array blocks (1) to (4) to be output, and aη is an output terminal It is.

次に動作について説明する。Next, the operation will be explained.

各メモリアレイブロック(1)〜(4)のデータは、そ
nぞれに接続さnている前−増幅器(5)〜(8)に入
力さn、それから出力制御回路(9)〜(6)に入力さ
nている。また出力制御回路(9)〜@は出力したいメ
モリアレイブロックを選択する信号(至)〜α樟も人力
されており、選択信号(至)〜QQにより出力端子αη
に出力したいメモリアレイブロックのデータが出力され
る。全各前直増幅器(5)〜(8)は接続されているメ
モリアレイブロック(1)〜(4)のデータを出力しな
くとも動作をする。
The data of each memory array block (1) to (4) is input to pre-amplifiers (5) to (8) connected to each other, and then to output control circuits (9) to (6). ) is entered. In addition, the output control circuits (9) to @ are also manually operated with signals (to) to α 樟 for selecting the memory array block to be output, and output terminals αη by selection signals (to) to QQ.
The data of the memory array block that you want to output is output. All the front amplifiers (5) to (8) operate even if they do not output data from the memory array blocks (1) to (4) to which they are connected.

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

従来の半導体装置は以上のように構成さnていたので、
選択さnないメモリアレイブロックに接続さ0た曲直増
幅器も動作するため、動作時の電源電流が大きくなると
いう問題点があった。
Since conventional semiconductor devices were configured as described above,
Since the curved amplifiers connected to memory array blocks that are not selected also operate, there is a problem in that the power supply current during operation increases.

この発明は上記のような問題点を解消するためになさn
たもので、ダイナミックRAMの動作時の[#+W流を
低減できる半導体装置を得をことを目的とする。
This invention was made to solve the above problems.
An object of the present invention is to obtain a semiconductor device which can reduce the [#+W flow during the operation of a dynamic RAM.

〔課題を解決するための手段〕[Means to solve the problem]

この発明に係る半導体装置は選択されるメモリアレイブ
ロックに接続さnている前−増幅器のみfr:Ajl1
作させるようにしたものである。
The semiconductor device according to the present invention includes only a pre-amplifier connected to a selected memory array block.
It was designed so that they could be created.

〔作用〕[Effect]

この発明における半導体装置は選択さ口るメモリアレイ
ブロックのみ全動作させて、その他の曲直増幅器を非動
作にすることにより、曲直増幅器に流れる電流が減少し
てその分だけ動作時の?[課電流が減少する。
In the semiconductor device according to the present invention, by fully operating only the selected memory array block and disabling the other linear amplifiers, the current flowing through the linear amplifiers is reduced by that amount during operation. [The applied current decreases.

〔実施例〕〔Example〕

以下、この発明の一実施例である半導体装置の出力回路
の回路図を示す。
A circuit diagram of an output circuit of a semiconductor device according to an embodiment of the present invention will be shown below.

図において、(1)〜t4Jはメモリアレイブロック、
(5)〜(8)はメモリアレイブロック(1)〜(4)
にそれぞn接続されている前置増幅器、(9)〜@は出
力制御回路、OJ〜OQは出力したいメモリアレイブロ
ック(5)(8)のデータ全選択するための信号、αの
は出力端子である。
In the figure, (1) to t4J are memory array blocks,
(5) to (8) are memory array blocks (1) to (4)
(9) to @ are output control circuits, OJ to OQ are signals for selecting all data of memory array blocks (5) and (8) to be output, α is the output It is a terminal.

この発明による出力回路は、回路構成自体は前記従来の
ものと変わらないが、出力したメモリアレイブロック(
1)〜(4)のデータを選択する信号(転)〜OQ全前
置増幅器(5)〜(8)にも入力されているため、選択
さnないメモリアレイブロックに接続さ口ている前置増
幅器は動作せずに、選択さnfcメモリアレイブロック
に接続さnた曲直増幅器のみ電流が流nるため、動作時
の電源電流を低減できる。
The output circuit according to the present invention has the same circuit configuration as the conventional one, but the output memory array block (
The signals for selecting the data in 1) to (4) are also input to the OQ preamplifiers (5) to (8), so the signals before they are connected to the memory array blocks that are not selected are also input to the OQ preamplifiers (5) to (8). Since the stationary amplifier does not operate and current flows only through the curved amplifier connected to the selected NFC memory array block, the power supply current during operation can be reduced.

なお、上記実施例では、曲直増幅器(5)〜(8)にメ
モリアレイブロック(1)〜(4)の選択信号を用いた
場合を示したが、テストモードにおいて各メモリアレイ
ブロック(1)〜(4)のデータを出力制御回路に入力
しなけばいけないため、上記実施例ではテストモードに
は適用できず、またニブルモード時も同様である。
In the above embodiment, the selection signals of the memory array blocks (1) to (4) are used for the linear amplifiers (5) to (8), but in the test mode, the selection signals of the memory array blocks (1) to (4) are used for the linear amplifiers (5) to (8). Since the data in (4) must be input to the output control circuit, the above embodiment cannot be applied to the test mode, and the same applies to the nibble mode.

そnを無くすために前置増幅器(5)〜(8)に第2図
に示すような回路を接続する。図において、(至)はメ
モリアレイブロックのデータ全選択するための信号、Q
lはテストモードにするための信号(イ)はニブルモー
ドにするための信号、(2υはNANDの出力信号、(
ロ)はN形MOSトランジスタ勾はfn装増幅・器であ
る。テストモード時又はニブルモード時にテストモード
にするための信号O燵、ニブルモードにする信号(1)
は1L#であるとする。また、メモリアレイを選択する
信号(至)は′L′の時選択さnるものとすると、NA
NDの出力信号は、メモリアレイを選択する111に関
係なく″H′になるため常時に前置増幅器は動作してい
る。また、ニブルモード、テストモードでない時は14
号Q俤、信号四が1H′であるため、信号(ト)が1L
′の時のみ曲直増幅器は動作する。
In order to eliminate this problem, a circuit as shown in FIG. 2 is connected to the preamplifiers (5) to (8). In the figure, (to) is a signal for selecting all data in the memory array block, and Q
l is the signal to set the test mode (a) is the signal to set the nibble mode, (2υ is the NAND output signal, (
B) is an N-type MOS transistor amplifier/amplifier equipped with fn. Signal for switching to test mode during test mode or nibble mode, signal for switching to nibble mode (1)
is 1L#. Also, assuming that the signal for selecting the memory array (to) is selected when it is 'L', then NA
The output signal of ND is "H" regardless of the memory array selection 111, so the preamplifier is always operating.Also, when not in nibble mode or test mode, 14
Since the signal Q and signal 4 are 1H', the signal (G) is 1L.
The linear amplifier operates only when .

〔発明の効果〕〔Effect of the invention〕

以上のようにこの発明によれば、選択さnたメモリアレ
イブロックに接続さnている@置増幅器のみ動作させる
ようにしたので、電源電流が減少さnる半導体装置が得
らnる。
As described above, according to the present invention, only the amplifiers connected to the selected memory array blocks are operated, so that a semiconductor device with a reduced power supply current can be obtained.

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

第り図はこの発明の一実施例(ζよる半導体装置の出力
回路の回路図、第2図はこの発明の他の実施例を示す前
置増幅器の回路図、第3図は従来の半導体装置の出力回
路の回路図である。 図中、(1)〜(4)はメモリアレイブロック、(5)
〜(8)はメモリアレイブロック(1)〜(4)に接続
さnている前置増幅器、(9)〜@は出力制御回路、(
至)〜aQはメモリアレイブロック(1)〜(4)のデ
ータを選択する信号、αηは出力端子、(至)はメモリ
アレイブロックのデータを選択する信号、OIはテスト
モードにする信号、(7)はニブルモードにする信号、
(ハ)はNANDの出力信号、(2)はNチャネルMO
8トランジスタ、(ハ)はメモリアレイブロックに接続
さnている前置場幅+a全示す。 なお1図中、同一符号は同一、又は相当部分を示す。
Fig. 2 is a circuit diagram of an output circuit of a semiconductor device according to an embodiment of the present invention (ζ), Fig. 2 is a circuit diagram of a preamplifier showing another embodiment of the invention, and Fig. 3 is a circuit diagram of a conventional semiconductor device. It is a circuit diagram of the output circuit of. In the figure, (1) to (4) are memory array blocks, and (5)
- (8) are preamplifiers connected to memory array blocks (1) - (4), (9) - @ are output control circuits, (
(to) ~ aQ is a signal for selecting data of memory array blocks (1) to (4), αη is an output terminal, (to) is a signal for selecting data of memory array block, OI is a signal for setting test mode, ( 7) is a signal to switch to nibble mode,
(c) is the NAND output signal, (2) is the N-channel MO
8 transistors, (c) shows the entire front field width +a connected to the memory array block. In addition, in FIG. 1, the same reference numerals indicate the same or equivalent parts.

Claims (1)

【特許請求の範囲】[Claims] ダイナミックRAMの動作時の電源電流を低減させるた
め、各メモリアレイブロックに接続されている前置増幅
器の内、出力したいメモリアレイブロックに接続されい
る前置増幅器のみを動作さる回路を備えたことを特徴と
する半導体装置。
In order to reduce the power supply current during dynamic RAM operation, a circuit is provided that operates only the preamplifier connected to the memory array block to which output is desired, out of the preamplifiers connected to each memory array block. Characteristic semiconductor devices.
JP63306554A 1988-12-02 1988-12-02 Semiconductor memory Pending JPH02152095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63306554A JPH02152095A (en) 1988-12-02 1988-12-02 Semiconductor memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63306554A JPH02152095A (en) 1988-12-02 1988-12-02 Semiconductor memory

Publications (1)

Publication Number Publication Date
JPH02152095A true JPH02152095A (en) 1990-06-12

Family

ID=17958444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63306554A Pending JPH02152095A (en) 1988-12-02 1988-12-02 Semiconductor memory

Country Status (1)

Country Link
JP (1) JPH02152095A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04177697A (en) * 1990-11-13 1992-06-24 Nec Corp Semiconductor memory
JPH04368695A (en) * 1991-06-17 1992-12-21 Mitsubishi Electric Corp Semiconductor integrated circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63209094A (en) * 1987-02-25 1988-08-30 Mitsubishi Electric Corp Semiconductor memory device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63209094A (en) * 1987-02-25 1988-08-30 Mitsubishi Electric Corp Semiconductor memory device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04177697A (en) * 1990-11-13 1992-06-24 Nec Corp Semiconductor memory
JPH04368695A (en) * 1991-06-17 1992-12-21 Mitsubishi Electric Corp Semiconductor integrated circuit

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