データシートサーチシステム
Selected language   Japanese  ▼
品番検索
         詳細検索


MC68340 データシート(Datasheet) 51 Page - Freescale Semiconductor, Inc

部品番号. MC68340
部品情報  Integrated Processor with DMA User’s Manual
ダウンロード  441 Pages
Scroll/Zoom Zoom In 100% Zoom Out
メーカー  FREESCALE [Freescale Semiconductor, Inc]
ホームページ  http://www.freescale.com
Logo 

 51 page
background image
3- 2
MC68340 USER’S MANUAL
MOTOROLA
the sample window. If an input makes a transition during the window time period, the level
recognized by the MC68340 is not predictable; however, the MC68340 always resolves
the latched level to either a logic high or low before using it. In addition to meeting input
setup and hold times for deterministic operation, all input signals must obey the protocols
described in this section.
SAMPLE WINDOW
t su
th
CLKOUT
EXT
Figure 3-1. Input Sample Window
NOTE
The terms
assert and negate are used throughout this section
to avoid confusion when dealing with a mixture of active-low
and active-high signals. The term
assert or assertion indicates
that a signal is active or true independent of the level
represented by a high or low voltage. The term
negate or
negation indicates that a signal is inactive or false.
3.1.1 Bus Control Signals
The MC68340 initiates a bus cycle by driving the A31–A0, SIZx, FCx, and R/
W outputs. At
the beginning of a bus cycle, SIZ1 and SIZ0 are driven with FC3–FC0. SIZ1 and SIZ0
indicate the number of bytes remaining to be transferred during an operand cycle
(consisting of one or more bus cycles). Table 3-1 lists the encoding of the SIZx signal.
These signals are valid while
AS is asserted. The R/W signal determines the direction of
the transfer during a bus cycle. Driven at the beginning of a bus cycle, R/
W is valid while
AS is asserted. R/W only transitions when a write cycle is preceded by a read cycle or
vice versa. The signal may remain low for consecutive write cycles. The
RMC signal is
asserted at the beginning of the first bus cycle of a read-modify-write operation and
remains asserted until completion of the final bus cycle of the operation.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com




Html ページ

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90  91  92  93  94  95  96  97  98  99  100   ...More


Datasheet Download



関連電子部品番号

部品番号コンポーネントの説明Html Viewメーカー
HMC585MS8GHIGH IP3 GaAs MMIC MIXER with INTEGRATED LO AMPLIFIER 400 - 650 MHz 1 2 3 4 5 MoreHittite Microwave Corporation
ADA4412-3Integrated Triple Video Filter with Selectable Cutoff Frequencies for RGB HD/SD 1 2 3 4 5 MoreAnalog Devices
LMX2531LQ1500EHigh Performance Frequency Synthesizer System with Integrated VCO 1 2 3 4 5 MoreNational Semiconductor (TI)
MSP34X1GMultistandard Sound Processor Family with Virtual Dolby Surround 1 2 3 4 5 MoreMicronas
ADN2804622 Mbps Clock and Data Recovery IC with Integrated Limiting Amplifier 1 2 3 4 5 MoreAnalog Devices
AD999212-Bit CCD Signal Processor with Precision Timing Generator 1 2 3 4 5 MoreAnalog Devices
ADE7768Energy Metering IC with Integrated Oscillator and Positive Power Accumulation 1 2 3 4 5 MoreAnalog Devices
CS5302Two−Phase Buck Controller with Integrated Gate Drivers and 4−Bit DAC 1 2 3 4 5 MoreON Semiconductor
CS5303Three−Phase Buck Controller with Integrated Gate Drivers 1 2 3 4 5 MoreON Semiconductor
CS5308Two−Phase PWM Controller with Integrated Gate Drivers for VRM 8.5 1 2 3 4 5 MoreON Semiconductor

リンク URL

ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ]  

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   ブックマーク   |   リンク交換   |   メーカーリスト
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl