KR950009721A

KR950009721A - Wordline Driver Circuits and Methods

Info

Publication number: KR950009721A
Application number: KR1019940022617A
Authority: KR
Inventors: 더블유. 베위크 게리; 알. 산토로 마크; 에스. 타브로우 리
Original assignee: 리 패츠; 선 마이크로시스템즈 인코오퍼레이티드
Priority date: 1993-09-27
Filing date: 1994-09-08
Publication date: 1995-04-24
Also published as: JPH07153276A; KR100342732B1

Abstract

반도체 메모리 어레이에 사용되는 드라이버 회로가 개시된다. 메모리 어레이는 복수의 드라이버 회로를 포함하며, 각각은 메모리 어레이의 워드라인을 구동시키는데 사용된다. 본 발명의 드라이버 회로는 풀업부와 능동 풀다운부를 포함한다. 풀업부는 워드라인에 결합된 출력노드를 풀업하기 위해 배열된 한쌍의 종속 트랜지스터를 포함한다. 능동 풀다운부는 워드라인에 결합된 출력노드를 풀다운하기 위해 배열된 한쌍의 종속 트랜지스터를 포함한다. 제어 피드백 경로는 출력노드와 드라이버 회로의 능동 풀다운부 사이에 결합된다, 피드백 경로는 드라이버 회로의 풀다운부의 활동화를 제어한다.A driver circuit for use in a semiconductor memory array is disclosed. The memory array includes a plurality of driver circuits, each of which is used to drive a word line of the memory array. The driver circuit of the present invention includes a pull up portion and an active pull down portion. The pullup section includes a pair of dependent transistors arranged to pull up an output node coupled to a wordline. The active pulldown section includes a pair of dependent transistors arranged to pull down an output node coupled to a wordline. The control feedback path is coupled between the output node and the active pull down portion of the driver circuit. The feedback path controls the activation of the pull down portion of the driver circuit.

Description

Wordline Driver Circuits and Methods

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 2도는 본 발명에 따른 워드라인 드라이버 회로의 회로 개략도.2 is a circuit schematic diagram of a wordline driver circuit according to the present invention.

Claims

Output node coupled to word line; A pull-up unit for driving an output node and a word line; an active pull-down unit for pulling down an output node and a word line; And a feedback control element coupled between the output node for controlling the activation of the active pull-down portion of the word line driver circuit and the active pull-down portion.

2. The circuit of claim 1, wherein the feedback control element is comprised of a voltage drop element between the output node and the active pull down portion.

3. The circuit of claim 2 wherein the voltage drop element is comprised of a resistor.

The circuit according to claim 1, wherein the pull-up portion is composed of a pull-up transistor.

2. The circuit of claim 1 wherein the pullup portion is comprised of cascade transistors.

The circuit according to claim 1, wherein the pull-down portion is composed of a pull-down transistor.

2. The circuit of claim 1 wherein the active pull-down portion is comprised of slave transistors.

2. The circuit of claim 1, wherein the feedback control element controls the active pulldown in response to the state of the driver circuit.

10. The circuit of claim 8, wherein the feedback control element deactivates the active pull down portion when the driver is in an inactive state.

9. The circuit of claim 8, wherein the feedback control element deactivates the active pull-down when the driver is in an active state.

9. The circuit of claim 8, wherein the feedback control element activates an active pull down portion when the driver is in a recovery state.

12. The circuit according to claim 11, wherein the feedback control element ends the activation of the pull-down section after the recovery state.

2. The circuit of claim 1 wherein the pull up portion and the active pull down portion match.

CLAIMS What is claimed is: 1. A method of operating a wordline driver circuit operable in an inactive state, a drive state, and an active pulldown state, comprising: coupling a wordline to an output node; Providing a pull-up circuit coupled to the output node; Providing a pull-down circuit coupled to the output node; Providing a control feedback path from the output node to the pull-down circuit and controlling activation of the pull-down circuit via the control feedback path based on the state of the driver circuit.

15. The method of claim 14, wherein the controlling step is further specified by deactivating the pulldown circuit while the driver circuit is in a driving state.

15. The method of claim 14, wherein providing the control feedback path is further configured to increase the potential difference between the output node and the pull-down circuit applied to the control feedback path in a driven state such that the pull-down recall is not activated. Way.

15. The method of claim 14, further comprising activating a pull-down circuit after the drive state.

18. The method of claim 17, wherein activating the pull down circuit further comprises pulling up a potential in the pull down circuit via a control feedback path.

19. The method of claim 18, wherein the pulldown circuit is automatically terminated after being activated.

Multiple word lines; A plurality of driver circuits each coupled with a plurality of word lines; And a current source shared between the plurality of driver circuits, wherein each driver circuit comprises: an output node coupled to its respective word line; A pull-up unit for driving an output node; An active pull-down section for pulling down the output node; And a feedback control element coupled between the output node and the active pull-down section for controlling the activation of the active pull-down section of the wordline driver circuit.

※ Note: The disclosure is based on the initial application.