KR950006605A - Random Access Memory Control Circuit - Google Patents
Random Access Memory Control Circuit Download PDFInfo
- Publication number
- KR950006605A KR950006605A KR1019930017269A KR930017269A KR950006605A KR 950006605 A KR950006605 A KR 950006605A KR 1019930017269 A KR1019930017269 A KR 1019930017269A KR 930017269 A KR930017269 A KR 930017269A KR 950006605 A KR950006605 A KR 950006605A
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- South Korea
- Prior art keywords
- signal
- memory
- ras
- memory bank
- random access
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Abstract
램덤 억세스 메모리(Random Access Memory; RAM)의 제어회로에 관한 것으로, 특히 저속으로 데이터를 억세스하는 메모리를 고속 시스템에 접속하여 사용가능하도록 하는 랜덤 억세스 메모리의 제어회로에 관한 것이다. 상기의 다이나믹 랜덤 억세스 메모리 제어회로는 프로그램의 실행에 의해 소정의 주기로 디램 억세스 신호를 출력하여 데이터를 처리하는 CPU(102)와, 상기 CPU(102)로부터 출력되는 억세스 신호의 입력 응답하여 상위 데이터 스트로브 신호(UDS), 하위 데이터 스트로브 신호(LDS) 및 억세스 제어신호와 RAS, CAS신호를 출력하는 제어로직(108)을 구비한다. 그리고, RAS와 CAS와 어드레스 신호 및 메모리 모드 제어신호의 입력에 응답하여 데이터를 내부의 소정 영역에 기입/독출하는 제1메모리 뱅크(116) 및 제2메모리뱅크(118)와, 상기 제어로직(108)과 상기 제1, 제2메모리 뱅크(116, 118)들의 사이에 접속되어 있으며, 상기 제어로직(108)으로부터 출력되는 RAS신호를 카운팅하여 기수번째 어드레스 위치에서 제1메모리 뱅크(116)로 RAS신호를 공급함과 동시에 이전에 어드레싱된 메모리 뱅크에 리플레쉬 타임을 공급하며, 우수번째 어드레스 위치에서 제2메모리 뱅크(118)의 RAS신호를 공급함과 동시에 이전에 어드레싱된 메모리 뱅크에 리플레쉬 타임을 공급하는 인터리빙회로(114)로 구성되어 있다.The present invention relates to a control circuit of a random access memory (RAM), and more particularly to a control circuit of a random access memory that connects a memory that accesses data at a low speed to a high-speed system. The dynamic random access memory control circuit outputs a DRAM access signal at predetermined intervals by execution of a program to process data, and an upper data strobe in response to input of an access signal output from the CPU 102. And a control logic 108 for outputting the signal UDS, the lower data strobe signal LDS, the access control signal, and the RAS and CAS signals. And a first memory bank 116 and a second memory bank 118 for writing / reading data into a predetermined area in response to input of the RAS, CAS, address signal, and memory mode control signal. The first memory bank 116 is connected between the first and second memory banks 116 and 118, and counts the RAS signal output from the control logic 108. The refresh time is supplied to the previously addressed memory bank at the same time as the RAS signal is supplied, and the refresh time is supplied to the previously addressed memory bank at the same time as the RAS signal of the second memory bank 118 is supplied from the even address address. It consists of an interleaving circuit 114 to supply.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 종래의 메모리 제어회로의 회로도.1 is a circuit diagram of a conventional memory control circuit.
제2도는 제1도에 따른 메모리 맵핑도.2 is a memory mapping diagram according to FIG.
제3A도 및 제3B도는 제1도의 동작 타이밍도.3A and 3B are operation timing diagrams of FIG.
제4도는 본 발명에 따른 랜덤 억세스 메모리의 제어회로도.4 is a control circuit diagram of a random access memory according to the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930017269A KR950006605A (en) | 1993-08-31 | 1993-08-31 | Random Access Memory Control Circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930017269A KR950006605A (en) | 1993-08-31 | 1993-08-31 | Random Access Memory Control Circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
KR950006605A true KR950006605A (en) | 1995-03-21 |
Family
ID=66817853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930017269A KR950006605A (en) | 1993-08-31 | 1993-08-31 | Random Access Memory Control Circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950006605A (en) |
-
1993
- 1993-08-31 KR KR1019930017269A patent/KR950006605A/en not_active Application Discontinuation
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