<kbd id="puvvv"><output id="puvvv"><center id="puvvv"></center></output></kbd><ins id="puvvv"><ul id="puvvv"><small id="puvvv"></small></ul></ins>
  • <pre id="puvvv"></pre>
    <big id="puvvv"><dfn id="puvvv"></dfn></big>
    <thead id="puvvv"><th id="puvvv"><tbody id="puvvv"></tbody></th></thead>
    <small id="puvvv"></small>
            


    
    



    

    
  
    
    
    
    
  
    
  
  

    





    


    
 
 




 
 


    

    
    


    參數(shù)資料
    

    


    


    
型號(hào)：
PCF8584

    

    
廠商：
NXP Semiconductors N.V.

    

    
英文描述：
IIC-bus controller(IIC總線控制器)

    

    
中文描述：
IIC總線控制器（國(guó)際進(jìn)口總線控制器）

    

    
文件頁(yè)數(shù)：
6/40頁(yè)

    

    
文件大?。?/td>
224K

    

    
代理商：
PCF8584


    

    

    

	
    
    
    

    
    
	
    1997 Oct 21
    6
    Philips Semiconductors
    Product specification
    I
    2
    C-bus controller
    PCF8584
    6
    FUNCTIONAL DESCRIPTION
    6.1
    General
    The PCF8584 acts as an interface device between
    standard high-speed parallel buses and the serial I
    2
    C-bus.
    On the I
    2
    C-bus, it can act either as master or slave.
    Bidirectional data transfer between the I
    2
    C-bus and the
    parallel-bus microcontroller is carried out on a byte-wise
    basis, using either an interrupt or polled handshake.
    Interface to either 80XX-type (e.g. 8048, 8051, Z80) or
    68000-type buses is possible. Selection of bus type is
    automatically performed (see Section 6.2).
    Fig.2  Pin configuration.
    handbook, halfpage
    CLK
    SDA or SDA OUT
    SCL or SCL IN
    A0
    DB0
    DB1
    DB2
    VSS
    VDD
    DB7
    DB6
    DB5
    DB4
    DB3
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    20
    19
    18
    17
    16
    15
    14
    13
    12
    11
    PCF8584
    MLA012 - 1
    IACK or SDA IN
    INT or SCL OUT
    RESET / STROBE
    CS
    RD (DTACK)
    WR (R/W)
    (1)
    (1)
    (1) Pin mnemonics between parenthesis indicate the 68000 mode
    pin designations.
    Table 1
    Control signals utilized by the PCF8584 for
    microcontroller/microprocessor interfacing
    The structure of the PCF8584 is similar to that of the
    I
    2
    C-bus interface section of the Philips’
    MABXXXX/PCF84(C)XX-series of microcontrollers, but
    with a modified control structure. The PCF8584 has five
    internal register locations. Three of these (own address
    register S0', clock register S2 and interrupt vector S3) are
    used for initialization of the PCF8584. Normally they are
    only written once directly after resetting of the PCF8584.
    The remaining two registers function as double registers
    (data buffer/shift register S0, and control/status
    register S1) which are used during actual data
    transmission/reception. By using these double registers,
    which are separately write and read accessible, overhead
    for register access is reduced. Register S0 is a
    combination of a shift register and data buffer.
    Register S0 performs all serial-to-parallel interfacing with
    the I
    2
    C-bus.
    Register S1 contains I
    2
    C-bus status information required
    for bus access and/or monitoring.
    6.2
    Interface Mode Control (IMC)
    Selection of either an 80XX mode or 68000 mode
    interface is achieved by detection of the first WR-CS signal
    sequence. The concept takes advantage of the fact that
    the write control input is common for both types of
    interfaces. An 80XX-type interface is default. If a
    HIGH-to-LOW transition of WR (R/W) is detected while CS
    is HIGH, the 68000-type interface mode is selected and
    theDTACK output is enabled. Care must be taken thatWR
    and CS are stable after reset.
    TYPE
    R/W
    WR
    R
    DTACK
    IACK
    8048/
    8051
    68000
    Z80
    no
    yes
    yes
    no
    no
    yes
    no
    no
    yes
    no
    yes
    yes
    no
    yes
    yes
    
    
    
    
    
    


    


    

    相關(guān)PDF資料
    		

    PDF描述
    		

    
    

    
PCF8593
Low power clock/calendar(低功耗時(shí)鐘/日歷)

    

    
PCF8801
CRYSTAL RESONATOR, 6MHZ

    

    
PCF8801U
LCD driver for 140 x 2 segments

    

    
PCF8811
80 x 128 pixels matrix LCD driver

    

    
PCF8812
CRYSTAL,          8.0 MHZ

    

    

    

    


    


    

    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
PCF8584P
 制造商:NXP Semiconductors 功能描述:I2C Bus Controller 20-Pin PDIP Bulk

    

    
PCF8584P,112
功能描述:I2C 接口集成電路 PARALLEL TO I2C CONVERTER RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16

    

    
PCF8584P112
 制造商:NXP Semiconductors 功能描述:PARALLEL TO I2C BUS INTERFACE 8584 制造商:NXP Semiconductors 功能描述:IC I2C CONTROLLER DIP-20

    

    
PCF8584PN
 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I/O Port

    

    
PCF8584T
 制造商:NXP Semiconductors 功能描述: 制造商:Texas Instruments 功能描述: 制造商:NXP Semiconductors 功能描述:I2C Bus Controller 20-Pin SO 制造商:PHILIPS-SEMI 功能描述:

    

    
    
    
    
	
    	
    
    
     
     
    發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。
    
 
     
    

   	  
    
     

    
                    			    				      
    
                
    
                  
    
                    
                    
    
                      
    
                      
                      
    采購(gòu)需求
      (若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)
    
                      
                      
    發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)
    
                      
                      
    發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)
    
                       
                        
    
                                
                                
    
                                    *型號(hào)
                                    *數(shù)量
                                    廠商
                                    批號(hào)
                                    封裝
                                  
    
                                    
                                
                                
    
                                    
                                        
    
                                            
                                            
                                        
    
                                        		
                                     
                                    
                                        
    
                                        		
                                    
                                        
    
                                        		
                                    
                                        
    
                                        		
                                    
                                        
    
                                        		
                                  
    
                                  
                                   
                                    
                            
    
                             
                             
							                            
    
                          添加更多采購(gòu)
    
                      
    
                      
                      
    
                      
                      
    我的聯(lián)系方式
    
                     
                     
                       
    
                                
                                
                                
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                        
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *