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    參數(shù)資料
    

    


    


    
型號：
PIC16F819

    

    
廠商：
Microchip Technology Inc.

    

    
英文描述：
18/20-Pin Enhanced FLASH Microcontrollers with nanoWatt Technology(18/20引腳，納瓦技術(shù)增強FLASH微控制器)

    

    
中文描述：
18/20-Pin增強型閃存微控制器采用納瓦技術(shù)（18/20引腳，納瓦技術(shù)增強閃存微控制器）

    

    
文件頁數(shù)：
68/164頁

    

    
文件大?。?/td>
3045K

    

    
代理商：
PIC16F819


    

    

    

	
    
    
    

    
    
	
    PIC16F818/819
    DS39598C-page 66
    Preliminary
     2002 Microchip Technology Inc.
    9.1
    Capture Mode
    In Capture mode, CCPR1H:CCPR1L captures the
    16-bit value of the TMR1 register when an event occurs
    on CCP1 pin. An event is defined as:
     Every falling edge
     Every rising edge
     Every 4th rising edge
     Every 16th rising edge
    An event is selected by control bits CCP1M3:CCP1M0
    (CCP1CON<3:0>). When a capture is made, the inter-
    rupt request flag bit CCP1IF (PIR1<2>) is set. It must
    be cleared in software. If another capture occurs before
    the value in register CCPR1 is read, the old captured
    value is overwritten by the new captured value.
    9.1.1
    CCP PIN CONFIGURATION
    In Capture mode, the CCP1 pin should be configured
    as an input by setting the TRISB<x> bit
    FIGURE 9-1:
    CAPTURE MODE 
    OPERATION BLOCK 
    DIAGRAM
    9.1.2
    TIMER1 MODE SELECTION
    Timer1 must be running in Timer mode or Synchro-
    nized Counter mode for the CCP module to use the
    capture feature. In Asynchronous Counter mode, the
    capture operation may not work. 
    9.1.3
    SOFTWARE INTERRUPT
    When the Capture mode is changed, a false capture
    interrupt may be generated. The user should keep bit
    CCP1IE (PIE1<2>) clear to avoid false interrupts and
    should clear the flag bit CCP1IF, following any such
    change in operating mode.
    9.1.4
    CCP PRESCALER
    There are four prescaler settings, specified by bits
    CCP1M3:CCP1M0. Whenever the CCP module is
    turned off, or the CCP module is not in Capture mode,
    the prescaler counter is cleared. This means that any
    RESET will clear the prescaler counter.
    Switching from one capture prescaler to another may
    generate an interrupt. Also, the prescaler counter will
    not be cleared, therefore, the first capture may be from
    a non-zero prescaler. Example 9-1 shows the recom-
    mended method for switching between capture pres-
    calers. This example also clears the prescaler counter
    and will not generate the “false” interrupt.
    EXAMPLE 9-1:
    CHANGING BETWEEN 
    CAPTURE PRESCALERS
    Note 1:
     If the CCP1 pin is configured as an
    output, a write to the port can cause a
    capture condition. 
    2:
     The TRISB bit (2 or 3) is dependent upon
    the setting of configuration bit 12
    (CCPMX).
    CCPR1H
    CCPR1L
    TMR1H
    TMR1L
    Set Flag bit CCP1IF
    (PIR1<2>)
    Capture
    Enable
    Q’s
    CCP1CON<3:0>
    CCP1 Pin
    Prescaler
    ÷
     1, 4, 16
    and
    Edge Detect
    CLRF
    MOVLW
    CCP1CON
    NEW_CAPT_PS;Load the W reg with
    ;the new prescaler
    ;move value and CCP ON
    CCP1CON
    ;Load CCP1CON with this
    ;value
    ;Turn CCP module off
    MOVWF
    
    
    
    
    
    


    


    

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    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
PIC16F819-E/ML
功能描述:8位微控制器 -MCU 3.5KB 256 RAM 16 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT

    

    
PIC16F819-E/P
功能描述:8位微控制器 -MCU 3.5KB 256 RAM 16 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT

    

    
PIC16F819-E/SO
功能描述:8位微控制器 -MCU 3.5KB 256 RAM 16 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT

    

    
PIC16F819-E/SS
功能描述:8位微控制器 -MCU 3.5KB 256 RAM 16 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT

    

    
PIC16F819-E/SSVAO
 制造商:Microchip Technology Inc 功能描述:

    

    
    
    
    
	
    	
    
    
     
     
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