• Title/Summary/Keyword: CMOS게이트

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ASIC 설계 기법

  • Park, Jeong-Hyeon;Lee, Hong-Seop;Kim, Dae-Ho
    • ETRI Journal
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    • v.11 no.3
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    • pp.73-95
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    • 1989
  • 본고에서는 최근 각광 받고 있는 ASIC 설계기술에 대해 그 설계과정과 설계방법을 언급하고, ASIC 설계를 위한 기술을 CMOS 게이트 어레이(2um : Double Metal Layer)를 중심으로 타이밍을 고려한 설계기법, 신뢰도를 고려한 설계기법, 테스트를 고려한 설계기법, 최적 설계기법, 페키지 및 베이스 어레이 선택방법 등으로 나누어 제시했다.

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Characteristics of CMOS Transistor using Dual Poly-metal(W/WNx/Poly-Si) Gate Electrode (쌍극 폴리-금속 게이트를 적용한 CMOS 트랜지스터의 특성)

  • 장성근
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.15 no.3
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    • pp.233-237
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    • 2002
  • A giga-bit DRAM(dynamic random access memory) technology with W/WNx/poly-Si dual gate electrode is presented in 7his papers. We fabricated $0.16\mu\textrm{m}$ CMOS using this technology and succeeded in suppressing short-channel effects. The saturation current of nMOS and surface-channel pMOS(SC-pMOS) with a $0.16\mu\textrm{m}$ gate was observed 330 $\mu\A/\mu\textrm{m}$ and 100 $\mu\A/\mu\textrm{m}$ respectively. The lower salutation current of SC-pMOS is due to the p-doped poly gate depletion. SC-pMOS shows good DIBL(dram-induced harrier lowering) and sub-threshold characteristics, and there was no boron penetration.

A CMOS Gate Array Global Router which regards Macrocell and I/O padcell (Macro셀과 I/O pad셀을 고려한 CMOS 게이트 어레이 Global Router)

  • Lee, Seung-Ho;Bae, Young-Hwan;Lee, Keon-Bae;Chong, Jong-Wha
    • Proceedings of the KIEE Conference
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    • 1988.07a
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    • pp.533-536
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    • 1988
  • For CMOS, this paper propose a new global routing algorithm in which macrocells and I/O padcells can be treated. Not only predefined feedthrough in base array, but also some polysilicon line which are not assigned as inputs are used to prevent the overflow of nets passing through the row. The signal nets are assigned on their feedthrough by the maze router. By treating macrocells and I/O padcell, the routing from internal to I/O cell can be done automatically and a kind of is constraints in design process can be reduced.

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A Study on Compression and Decompression of Bit Map Data by NibbleRLE Code (니블 RLE 코드에 의한 비트 맵 데이타의 압축과 복원에 관한 연구)

  • Jo, Gyeong-Yeon
    • The Transactions of the Korea Information Processing Society
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    • v.2 no.6
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    • pp.857-865
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    • 1995
  • In this paper, a nibble RLE(Run Length Encoding) code for real time compression and decompression of Hanguel bit map font and printer data is proposed. The nibble RLE code shows good compression ratio in complete form Hangeul Myoungjo and Godik style bit map font and printer output bit map data. And two ASICs seperating compression and decompression are designed and simulated on CAD to verify the proposed code. The 0.8 micron CMOS Sea of Gate is used to implement the ASICs in amount of 2, 400 gates, and these are running at 25MHz. Therefore, the proposed code could be implemented with simple hardware and performs 100M bit/sec compression and decomression at maximum, it is good for real time applications.

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An Efficient Hardware Implementation of ARIA Block Cipher Algorithm (블록암호 알고리듬 ARIA의 효율적인 하드웨어 구현)

  • Kim, Dong-Hyeon;Shin, Kyung-Wook
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2012.05a
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    • pp.91-94
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    • 2012
  • This paper describes an efficient implementation of ARIA crypto algorithm which is a KS (Korea Standards) block cipher algorithm. The ARIA crypto-processor supports three master key lengths of 128/192/256-bit specified in the standard. To reduce hardware complexity, a hardware sharing is employed, which shares round function in encryption/decryption module with key initialization module. It reduces about 20% of gate counts when compared with straightforward implementation. The ARIA crypto-processor is verified by FPGA implementation, and synthesized with a 0.13-${\mu}m$ CMOS cell library. It has 33,218 gates and the estimated throughput is about 640 Mbps at 100 MHz.

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Timing Window Shifting by Gate Sizing for Crosstalk Avoidance (크로스톡 회피를 위한 게이트 사이징을 이용한 타이밍 윈도우 이동)

  • Zang, Na-Eun;Kim, Ju-Ho
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.44 no.11
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    • pp.119-126
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    • 2007
  • This paper presents an efficient heuristic algorithm to avoid crosstalk which effects to delay of CMOS digital circuit by downsizing and upsizing of Gate. The proposed algorithm divide into two step, step1 performs downsizing of gate, step2 performs upsizing, so that avoid adjacent aggressor to critical path in series. The proposed algorithm has been verified on LGSynth91 benchmark circuits and Experimental results show an average 8.64% Crosstalk Avoidance effect. This result proved new potential of proposed algorithm.

Assistant Professor, Department of Computer Engineering Pukyong Universisty (한국형 방송 프로그램 시스템 디코더 ASSP의 개발)

  • Jo, Gyeong-Yeon
    • The Transactions of the Korea Information Processing Society
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    • v.3 no.5
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    • pp.1229-1239
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    • 1996
  • The increase of additional information broadcasting of TV demands a graphic overlay processor. This paper is about the design, implementation and testing of a graphic overlay processor called by KBPS decoder ASSP (Applicatio n Specific Standard Product) which is compliance with Korea Broadcast Programming System. KBPS decoder ASSP consists of embedded 8 bit microprocessor Z80, graphic overlay controller, KBPS schedule decoder, memory controller, priority interrupt controller, MIDI controller, infrared raccoon receiver, async scrial communication controller, timer, bus controller, universal parallel input-output port and serial-parallel interface. The 0.8 micron CMOS Sea of Gate is used to implement the ASSP in amount of about 31,500 gates, and it is running at 14.318MHz.

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A Design of Parity Checker/Generator Using Logic Gate for Low-Power Consumption (저 전력용 논리회로를 이용한 패리티체커 설계)

  • Lee, Jong-Jin;Cho, Tae-Won;Bae, Hyo-Kwan
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.38 no.2
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    • pp.50-55
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    • 2001
  • In this paper, a 8bit parity checker/generator is designed using a new gate which is proposed to implement the exclusive or(XOR) and exclusive-nor(XNOR) functions for low power consumption on transistor level. Conventional XOR/XNOR gate such as CPL, DPL and CCPL designed to reduce the power consumption has an inverter to get the full swing output signals. But this inverter consumes the major part of power and causes the time delay on CMOS circuits. Thus a new technique was adopted not utilizing inverter in the circuits. The results of simulation by Hspice shows 33% of power reduction compared with CCPL gate when A 8 bit parity checker was made with the proposed new gate using $0.8{\mu}mCMOS$ technology.

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Circuit Design of Frquency Hopping Wireless LAN PLCP Sublayer (주파수 호핑방식 무선 LAN의 PLCP 계층 회로 설계)

  • 최해욱;김경수;기장근;조현묵
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.23 no.8
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    • pp.1941-1951
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    • 1998
  • In this paper, hardware circuit that performs functions of IEEE 802.11 wireless LAN frequency hopping PLCP protocol is designed using 0.8 um CMOS cmn8a technology of the COMPASS. Transmission rate of the designed hardware is 1Mbps. The designed circuit have about 6300 gates and $2.5{\times}2.5mm^2$ area. In order to verify the circuit, two PLCP circuits are interconnected and frames are transmitted from one PLCP circuit to the other PLCP circuit. As a results of the simulation, we conclude that the designed PLCP circuit works well as the IEEE 802.11 standard specification.

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A 170㎼ Low Noise Amplifier Using Current Reuse Gm-boosting Technique for MedRadio Applications (전류 재사용 Gm-boosting 기술을 이용한 MedRadio 대역에서의 170㎼ 저잡음 증폭기)

  • Kim, InSoo;Kwon, Kuduck
    • Journal of the Institute of Electronics and Information Engineers
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    • v.54 no.2
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    • pp.53-57
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    • 2017
  • This paper proposes a 401MHz-406MHz low noise amplifier for MedRadio applications. The proposed low noise amplifier adopts a common gate amplifier topology using current reuse gm-boosting technique. The proposed low noise amplifier shows better performance of voltage gain and noise figure than the conventional gm-boosted common gate amplifier in the same power consumption. The proposed current-reuse gm-boosted low noise amplifier achieves a voltage gain of 22 dB, a noise figure of 2.95 dB, and IIP3 of -17 dBm while consuming $170{\mu}W$ from a 0.5 V supply voltage in $0.13{\mu}m$ CMOS process.