•         


    
    



    

    
  
    
    
    
    
  
    
  
  

    





    


    
 
 




 
 


    

    
    


    參數(shù)資料
    

    


    


    
型號(hào)：
DS17285S-3

    

    
廠商：
DALLAS SEMICONDUCTOR

    

    
元件分類：
Timer or RTC

    

    
英文描述：
1 TIMER(S), REAL TIME CLOCK, PDSO24

    

    
封裝：
SOIC-24

    

    
文件頁(yè)數(shù)：
2/38頁(yè)

    

    
文件大?。?/td>
415K

    

    
代理商：
DS17285S-3


    

    

    

	
    
    
    

    
    
	
    DS17285/DS17287
    10 of 38
    REGISTER B
    MSB
    LSB
    BIT 7
    BIT 6
    BIT 5
    BIT 4
    BIT 3
    BIT 2
    BIT 1
    BIT 0
    SET
    PIE
    AIE
    UIE
    SQWE
    DM
    24/12
    DSE
    SET - When the SET bit is a 0, the update transfer functions normally by advancing the counts once per
    second. When the SET bit is written to a 1, any update transfer is inhibited and the program can initialize
    the time and calendar bytes without an update occurring in the midst of initializing. Read cycles can be
    executed in a similar manner. SET is a read/write bit that is not modified by internal functions of the
    DS17285/DS17287.
    PIE - The Periodic Interrupt Enable bit is a read/write bit which allows the Periodic Interrupt Flag (PF)
    bit in Register C to drive the IRQ pin low. When the PIE bit is set to 1, periodic interrupts are generated
    by driving the IRQ pin low at a rate specified by the RS3-RS0 bits of Register A. A 0 in the PIE bit
    blocks the IRQ output from being driven by a periodic interrupt, but the Periodic Flag (PF) bit is still set
    at the periodic rate. PIE is not modified by any internal DS17285/DS17287 functions.
    AIE - The Alarm Interrupt Enable (AIE) bit is a read/write bit which, when set to a 1, permits the Alarm
    Flag (AF) bit in register C to assert IRQ . An alarm interrupt occurs for each second that the 3-time bytes
    equal the 3 alarm bytes including a “don’t care” alarm code of binary 11XXXXXX. When the AIE bit is
    set to 0, the AF bit does not initiate the IRQ signal. The internal functions of the DS17285/DS17287 do
    not affect the AIE bit.
    UIE - The Update Ended Interrupt Enable (UIE) bit is a read/write bit that enables the Update End Flag
    (UF) bit in Register C to assert IRQ . The SET bit going high clears the UIE bit.
    SQWE - When the Square Wave Enable (SQWE) bit is set to a 1 and E32K=0, a square wave signal at
    the frequency set by the rate-selection bits RS3 through RS0 is driven out on the SQW pin. When the
    SQWE bit is set to 0 and E32K=0, the SQW pin is held low. SQWE is a read/write bit. SQWE is set to a
    1 when VCC is powered up.
    DM - The Data Mode (DM) bit indicates whether time and calendar information is in binary or BCD
    format. The DM bit is set by the program to the appropriate format and can be read as required. This bit
    is not modified by internal functions. A 1 in DM signifies binary data while a 0 in DM specifies Binary
    Coded Decimal (BCD) data.
    24/12 - The 24/12 control bit establishes the format of the hours byte. A 1 indicates the 24-hour mode
    and a 0 indicates the 12-hour mode. This bit is read/write.
    DSE - The Daylight Savings Enable (DSE) bit is a read/write bit which enables two special updates when
    DSE is set to 1. On the first Sunday in April the time increments from 1:59:59 AM to 3:00:00 AM. On
    the last Sunday in October when the time first reaches 1:59:59 AM it changes to 1:00:00 AM. These
    special updates do not occur when the DSE bit is a zero. This bit is not affected by internal functions.
    
    
    
    
    
    


    


    

    相關(guān)PDF資料
    		

    PDF描述
    		

    
    

    
DS1742-100
0 TIMER(S), REAL TIME CLOCK, PDIP24

    

    
DS1742W-120
0 TIMER(S), REAL TIME CLOCK, PDIP24

    

    
DS1742-70
0 TIMER(S), REAL TIME CLOCK, PDIP24

    

    
DS1742W-150
0 TIMER(S), REAL TIME CLOCK, DMA24

    

    
DS1743P-70
0 TIMER(S), REAL TIME CLOCK, DMA34

    

    

    

    


    


    

    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
DS17285S-3/T&R
 制造商:Maxim Integrated Products 功能描述:IC RTC 3V 2K NV RAM 24-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock 3V/5V RTC K Multiplexed Kick-S

    

    
DS17285S-3/T&R
功能描述:實(shí)時(shí)時(shí)鐘 3V/5V RTC K Multiplexed Kick-S RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube

    

    
DS17285S-3+
功能描述:實(shí)時(shí)時(shí)鐘 3V/5V RTC K Multiplexed Kick-S RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube

    

    
DS17285S-3+T&R
 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK MULTIPLEXED 2KBYTE 24SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC 3V 2K NV RAM 24-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock 3V/5V RTC K Multiplexed Kick-S

    

    
DS17285S-3+T&R
功能描述:實(shí)時(shí)時(shí)鐘 3V/5V RTC K Multiplexed Kick-S RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube

    

    
    
    
    
	
    	
    
    
     
     
    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
    
                     
                     
                       
    
                                
                                
                                
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                        
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *