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    參數(shù)資料
    

    


    


    
型號：
P87C528EBPN

    

    
廠商：
NXP SEMICONDUCTORS

    

    
元件分類：
微控制器/微處理器

    

    
英文描述：
80C51 8-bit microcontrollers 16K/32K, 512 OTP, I2C, watchdog timer

    

    
中文描述：
8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PDIP40

    

    
封裝：
0.600 INCH, PLASTIC, SOT-129-1, MO-015AJ, DIP-40

    

    
文件頁數(shù)：
25/56頁

    

    
文件大?。?/td>
337K

    

    
代理商：
P87C528EBPN


    

    

    

	
    
    
    

    
    
	
    Philips Semiconductors
    Product specification
    8XC52/54/58/80C32
    8XC51FA/FB/FC/80C51FA
    8XC51RA+/RB+/RC+/RD+/80C51RA+
    80C51 8-bit microcontroller family
    8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V), 
    low power, high speed (33MHz)
    1999 Apr 01
     25
    (8XC51FX and 8XC51RX+ ONLY)
    Programmable Counter Array (PCA) 
    (8XC51FX and 8XC51RX+ only)
    The Programmable Counter Array available on the 8XC51FX and
    8XC51RX+ is a special 16-bit Timer that has five 16-bit
    capture/compare modules associated with it. Each of the modules
    can be programmed to operate in one of four modes: rising and/or
    falling edge capture, software timer, high-speed output, or pulse
    width modulator. Each module has a pin associated with it in port 1.
    Module 0 is connected to P1.3(CEX0), module 1 to P1.4(CEX1), etc.
    The basic PCA configuration is shown in Figure 14.
    The PCA timer is a common time base for all five modules and can
    be programmed to run at: 1/12 the oscillator frequency, 1/4 the
    oscillator frequency, the Timer 0 overflow, or the input on the ECI pin
    (P1.2). The timer count source is determined from the CPS1 and
    CPS0 bits in the CMOD SFR as follows (see Figure 17):
    CPS1 CPS0 PCA Timer Count Source
    0
    0
    1/12 oscillator frequency
    0
    1
    1/4 oscillator frequency
    1
    0
    Timer 0 overflow
    1
    1
    External Input at ECI pin
    In the CMOD SFR are three additional bits associated with the PCA.
    They are CIDL which allows the PCA to stop during idle mode,
    WDTE which enables or disables the watchdog function on
    module 4, and ECF which when set causes an interrupt and the
    PCA overflow flag CF (in the CCON SFR) to be set when the PCA
    timer overflows. These functions are shown in Figure 15.
    The watchdog timer function is implemented in module 4 (see
    Figure 24).
    The CCON SFR contains the run control bit for the PCA and the
    flags for the PCA timer (CF) and each module (refer to Figure 18).
    To run the PCA the CR bit (CCON.6) must be set by software. The
    PCA is shut off by clearing this bit. The CF bit (CCON.7) is set when
    the PCA counter overflows and an interrupt will be generated if the
    ECF bit in the CMOD register is set, The CF bit can only be cleared
    by software. Bits 0 through 4 of the CCON register are the flags for
    the modules (bit 0 for module 0, bit 1 for module 1, etc.) and are set
    by hardware when either a match or a capture occurs. These flags
    also can only be cleared by software. The PCA interrupt system
    shown in Figure 16.
    Each module in the PCA has a special function register associated
    with it. These registers are: CCAPM0 for module 0, CCAPM1 for
    module 1, etc. (see Figure 19). The registers contain the bits that
    control the mode that each module will operate in. The ECCF bit
    (CCAPMn.0 where n=0, 1, 2, 3, or 4 depending on the module)
    enables the CCF flag in the CCON SFR to generate an interrupt
    when a match or compare occurs in the associated module. PWM
    (CCAPMn.1) enables the pulse width modulation mode. The TOG
    bit (CCAPMn.2) when set causes the CEX output associated with
    the module to toggle when there is a match between the PCA
    counter and the module’s capture/compare register. The match bit
    MAT (CCAPMn.3) when set will cause the CCFn bit in the CCON
    register to be set when there is a match between the PCA counter
    and the module’s capture/compare register.
    The next two bits CAPN (CCAPMn.4) and CAPP (CCAPMn.5)
    determine the edge that a capture input will be active on. The CAPN
    bit enables the negative edge, and the CAPP bit enables the
    positive edge. If both bits are set both edges will be enabled and a
    capture will occur for either transition. The last bit in the register
    ECOM (CCAPMn.6) when set enables the comparator function.
    Figure 20 shows the CCAPMn settings for the various PCA
    functions.
    There are two additional registers associated with each of the PCA
    modules. They are CCAPnH and CCAPnL and these are the
    registers that store the 16-bit count when a capture occurs or a
    compare should occur. When a module is used in the PWM mode
    these registers are used to control the duty cycle of the output.
    MODULE FUNCTIONS:
    16-BIT CAPTURE
    16-BIT TIMER
    16-BIT HIGH SPEED OUTPUT
    8-BIT PWM
    WATCHDOG TIMER (MODULE 4 ONLY)
    MODULE 0
    MODULE 1
    MODULE 2
    MODULE 3
    MODULE 4
    P1.3/CEX0
    P1.4/CEX1
    P1.5/CEX2
    P1.6/CEX3
    P1.7/CEX4
    16 BITS
    PCA TIMER/COUNTER
    TIME BASE FOR PCA MODULES
    16 BITS
    SU00032
    Figure 14.  Programmable Counter Array (PCA)
    
    
    
    
    
    


    


    

    相關(guān)PDF資料
    		

    PDF描述
    		

    
    

    
P80C52X2
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P83C51FA-5N
80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless, low voltage 2.7V.5.5V, low power, high speed 33 MHz

    

    
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P80C32
80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V, low power, high speed 30/33 MHz

    

    

    

    


    


    

    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
P87C528EFA
 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller

    

    
P87C528EFAA-T
 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller

    

    
P87C528EFB
 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller

    

    
P87C528EFBB
 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS single-chip 8-bit microcontroller

    

    
P87C528EFBB-S
 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller

    

    
    
    
    
	
    	
    
    
     
     
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